Pub Date : 2023-10-27DOI: 10.1080/02757540.2023.2276511
Kamran Abbasi, Parveen Ali, Virginia Barbour, Thomas Benfield, Kirsten Bibbins-Domingo, Gregory E. Erhabor, Stephen Hancocks, Richard Horton, Laurie Laybourn-Langton, Robert Mash, Peush Sahni, Wadeia Mohammad Sharief, Paul Yonga, Chris Zielinski
{"title":"Time to treat the climate and nature crisis as one indivisible global health emergency","authors":"Kamran Abbasi, Parveen Ali, Virginia Barbour, Thomas Benfield, Kirsten Bibbins-Domingo, Gregory E. Erhabor, Stephen Hancocks, Richard Horton, Laurie Laybourn-Langton, Robert Mash, Peush Sahni, Wadeia Mohammad Sharief, Paul Yonga, Chris Zielinski","doi":"10.1080/02757540.2023.2276511","DOIUrl":"https://doi.org/10.1080/02757540.2023.2276511","url":null,"abstract":"","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-23DOI: 10.1080/02757540.2023.2269939
Azadeh Farhadi, Naeimeh Enayatizamir, Neda Moradi, Mehdi Taghavi
ABSTRACTDue to the influence of some ions on laccase production by Trametes pubescens, the impact of different concentrations of zinc (Zn) on fungus growth and laccase production was investigated. The removal kinetics and adsorption isotherm of Zn by T. pubescens from an aqueous solution were evaluated. The results demonstrated the growth inhibition of fungus by an increase in Zn concentration. Zn concentrations of 10 and 20 mg L−1 in the medium caused an increase in the growth of fungus. Laccase production reduced at 100 and 200 mg L−1 of Zn. The kinetic parameters of Zn adsorption onto the biomass of fungus from aqueous solutions (containing 200 mg L−1 Zn) obtained by experiments at different contact times. The results indicated a trend of increasing Zn removal by fungus with the contact time, and it was well-described by the Intra-particle diffusion and Elovich models. The maximum removal of Zn was 67.1% at 7200 min, with a maximum sorption capacity of 44.7 mg g−1. The adsorption of Zn was well-fitted to the Freundlich and Langmuir sorption models. This study indicated an impact of a low concentration of Zn to increase laccase production and the feasibility of this fungus to remove Zn from aqueous solutions.KEYWORDS: Adsorption isothermTrametes pubescenskinetic of removalLaccase activityZinc AcknowledgementsThe authors would like to thank the Research council of Shahid Chamran University of Ahvaz for the support of this study (GN. SCU. AS1401.248).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsAzadeh FarhadiAzadeh Farhadi is a Ph.D. student of soil biology and biotechnology.Naeimeh EnayatizamirNaeimeh Enayatizamir, an associate professor of soil biology and biotechnology, searches on both plant growth promoting bacteria and bioremediation and Biodegradation of recalcitrant compounds.Neda MoradiNeda Moradi, an assistant professor of soil chemistry and pollution, writes on metals pollution in soil and Soil amendments.Mehdi TaghaviMehdi Taghavi, an assistant professor of chemistry, writes on material characterization, plymer and nanomaterials.
{"title":"Zinc’s impact on the growth and laccase activity of <i>Trametes pubescens</i> and an equilibrium study of zinc adsorption","authors":"Azadeh Farhadi, Naeimeh Enayatizamir, Neda Moradi, Mehdi Taghavi","doi":"10.1080/02757540.2023.2269939","DOIUrl":"https://doi.org/10.1080/02757540.2023.2269939","url":null,"abstract":"ABSTRACTDue to the influence of some ions on laccase production by Trametes pubescens, the impact of different concentrations of zinc (Zn) on fungus growth and laccase production was investigated. The removal kinetics and adsorption isotherm of Zn by T. pubescens from an aqueous solution were evaluated. The results demonstrated the growth inhibition of fungus by an increase in Zn concentration. Zn concentrations of 10 and 20 mg L−1 in the medium caused an increase in the growth of fungus. Laccase production reduced at 100 and 200 mg L−1 of Zn. The kinetic parameters of Zn adsorption onto the biomass of fungus from aqueous solutions (containing 200 mg L−1 Zn) obtained by experiments at different contact times. The results indicated a trend of increasing Zn removal by fungus with the contact time, and it was well-described by the Intra-particle diffusion and Elovich models. The maximum removal of Zn was 67.1% at 7200 min, with a maximum sorption capacity of 44.7 mg g−1. The adsorption of Zn was well-fitted to the Freundlich and Langmuir sorption models. This study indicated an impact of a low concentration of Zn to increase laccase production and the feasibility of this fungus to remove Zn from aqueous solutions.KEYWORDS: Adsorption isothermTrametes pubescenskinetic of removalLaccase activityZinc AcknowledgementsThe authors would like to thank the Research council of Shahid Chamran University of Ahvaz for the support of this study (GN. SCU. AS1401.248).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsAzadeh FarhadiAzadeh Farhadi is a Ph.D. student of soil biology and biotechnology.Naeimeh EnayatizamirNaeimeh Enayatizamir, an associate professor of soil biology and biotechnology, searches on both plant growth promoting bacteria and bioremediation and Biodegradation of recalcitrant compounds.Neda MoradiNeda Moradi, an assistant professor of soil chemistry and pollution, writes on metals pollution in soil and Soil amendments.Mehdi TaghaviMehdi Taghavi, an assistant professor of chemistry, writes on material characterization, plymer and nanomaterials.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"301 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135412959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-19DOI: 10.1080/02757540.2023.2269933
Milihate Aliu, Robert Šajn, Trajče Stafilov
ABSTRACTThis article presents the results of a geochemical investigation of an anthropogenic group of metals (Ag, Au, Bi, Cu, and Mo) in the surface of the Mitrovica region, Republic of Kosovo. In order to determine their content and to evaluate the contamination level, 156 topsoil samples were collected in an area of 301.5 km2. The content of elements was determined by inductively coupled plasma-mass spectrometry. The results showed that the average content of Cu (42 mg/kg), Bi (1.5 mg/kg), Ag (0.44 mg/kg), and Au (2.7 μg/kg) exceeded their average content in European and world soils by 3.4 and 1.4 times; 3.0 and 7.5 times; 1.62 and 8.8 times and 2.7 and 1.8 times, respectively. The average Mo content (0.68 mg/kg) exceeded the average content in European soils by 1.09 times, while the average content in world soil was not exceeded. Copper levels exceeded the Dutch target value of 36 mg/kg in 152 km2 and the Dutch action value of 190 mg/kg in 6.2 km2 of the study area. The enrichment factor and geo-accumulation index values for the analysed elements indicate that their higher content is of anthropogenic origin, mainly due to lead and zinc mining and metallurgical activities in the study area. The quality of soils in the Mitrovica region varies from highly contaminated with copper and bismuth, with extremely high enrichment of Cu, Bi and Ag in the soils of the central zone (Zone I) and the urban soils of the cities of Zveçan and Mitrovica. Therefore, the establishment of a monitoring and treatment programme for contaminated soils in this zone would be necessary to protect human health .KEYWORDS: Soilpollutionenrichment factorgeo-accumulation indexMitrovica regionRepublic of Kosovo Author contributionsMA, RŠ and TS: conceptualisation and supervision of the project; MA and TS: writing of the manuscript. MA and TS: majority of the experiments. RŠ: statistical processing and preparation of the maps; All authors reviewed and edited the manuscript.Data availability statementThe authors confirm that the data supporting the findings of this study are available within the article.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingData processing is partially supported by the Slovenian Research Agency under the Research Programme Groundwater and Geochemistry (P1-0020).Notes on contributorsMilihate AliuMilihate Aliu has received her B.Sc. (1990) and M.Sc. (2004) in University of Prishtina, Faculty of Natural Science and Mathematics, Department of Chemistry, Republic of Kosovo. PhD (2011) has received from Ss. Cyril and Methodius University, Faculty of Natural Sciences and Mathematics, Institute of Chemistry, Skopje, North Macedonia. From 2001-2007 she was with the Faculty of Science, Prishtina, Republic of Kosovo as teaching assistant, from 2002-2004 was as teaching assistant at the State University of Tetovo, Republic of Macedonia and from 2004-2011 she was teaching assistant at the Faculty of Me
{"title":"Distribution of Ag, Au, Bi, Cu, and Mo in surface soils. Case study: Mitrovica region, Republic of Kosovo","authors":"Milihate Aliu, Robert Šajn, Trajče Stafilov","doi":"10.1080/02757540.2023.2269933","DOIUrl":"https://doi.org/10.1080/02757540.2023.2269933","url":null,"abstract":"ABSTRACTThis article presents the results of a geochemical investigation of an anthropogenic group of metals (Ag, Au, Bi, Cu, and Mo) in the surface of the Mitrovica region, Republic of Kosovo. In order to determine their content and to evaluate the contamination level, 156 topsoil samples were collected in an area of 301.5 km2. The content of elements was determined by inductively coupled plasma-mass spectrometry. The results showed that the average content of Cu (42 mg/kg), Bi (1.5 mg/kg), Ag (0.44 mg/kg), and Au (2.7 μg/kg) exceeded their average content in European and world soils by 3.4 and 1.4 times; 3.0 and 7.5 times; 1.62 and 8.8 times and 2.7 and 1.8 times, respectively. The average Mo content (0.68 mg/kg) exceeded the average content in European soils by 1.09 times, while the average content in world soil was not exceeded. Copper levels exceeded the Dutch target value of 36 mg/kg in 152 km2 and the Dutch action value of 190 mg/kg in 6.2 km2 of the study area. The enrichment factor and geo-accumulation index values for the analysed elements indicate that their higher content is of anthropogenic origin, mainly due to lead and zinc mining and metallurgical activities in the study area. The quality of soils in the Mitrovica region varies from highly contaminated with copper and bismuth, with extremely high enrichment of Cu, Bi and Ag in the soils of the central zone (Zone I) and the urban soils of the cities of Zveçan and Mitrovica. Therefore, the establishment of a monitoring and treatment programme for contaminated soils in this zone would be necessary to protect human health .KEYWORDS: Soilpollutionenrichment factorgeo-accumulation indexMitrovica regionRepublic of Kosovo Author contributionsMA, RŠ and TS: conceptualisation and supervision of the project; MA and TS: writing of the manuscript. MA and TS: majority of the experiments. RŠ: statistical processing and preparation of the maps; All authors reviewed and edited the manuscript.Data availability statementThe authors confirm that the data supporting the findings of this study are available within the article.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingData processing is partially supported by the Slovenian Research Agency under the Research Programme Groundwater and Geochemistry (P1-0020).Notes on contributorsMilihate AliuMilihate Aliu has received her B.Sc. (1990) and M.Sc. (2004) in University of Prishtina, Faculty of Natural Science and Mathematics, Department of Chemistry, Republic of Kosovo. PhD (2011) has received from Ss. Cyril and Methodius University, Faculty of Natural Sciences and Mathematics, Institute of Chemistry, Skopje, North Macedonia. From 2001-2007 she was with the Faculty of Science, Prishtina, Republic of Kosovo as teaching assistant, from 2002-2004 was as teaching assistant at the State University of Tetovo, Republic of Macedonia and from 2004-2011 she was teaching assistant at the Faculty of Me","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135729095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-19DOI: 10.1080/02757540.2023.2269139
Sa’adatu E. Mohammed, Olushola S. Ayanda, Simphiwe M. Nelana
ABSTRACTThis study assessed metal pollution in wetland ecosystems in North-western Nigeria, which is susceptible to pollution from various sources including agriculture, industry and urbanisation. The study analysed the concentrations of lead (Pb), copper (Cu), chromium (Cr), cadmium (Cd) and iron (Fe) in wetland soils and plants from 10 sites in the region. Pollution indices, including contamination factor, modified degree of contamination, Nemerow pollution index and pollution load index, were used to determine the extent of metal pollution in the study area, while transfer factors were calculated to assess the potential for metal transfer from soils to plants. The results showed that metal concentrations in wetland soils and plants varied widely depending on the location and the metal of interest, with some sites showing higher concentrations due to agricultural and mining activities. The pollution indices indicated that metal pollution was generally moderate to highly polluted in the study areas, with some metals showing higher potential for transfer from soil to plants than others. This study provides valuable insights into the extent and severity of metal pollution in some wetland soils and plants in Northern Nigeria.KEYWORDS: Wetlandspollution indicestransfer factorsource apportionmentNigeria AcknowledgementsThe authors are thankful to the management of Federal University Dutse especially the Laboratory division for providing the enabling environment and available equipment and reagents throughout this research to the team who worked for the success of this manuscript’s compilation. The efforts of Professor M. D. Saeed in the entire research carried out are also acknowledged for his expert supervision of the project.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is a product a research funded by Tertiary Education Trust Fund (TETFUND) Nigeria.Notes on contributorsSa’adatu E. MohammedSa’adatu E. Mohammed is a senior lecturer of Analytical chemistry with the Department of Chemistry Federal University Dutse Nigeria who has a keen interest in pollution/remediation studies and nano particles development, recovery and disposal.Olushola S. AyandaOlushola S. Ayanda is an Associate Professor of Industrial Chemistry. He specialises in Nanotechnology and Environmental ChemistrySimphiwe M. NelanaSimphiwe M. Nelana specializes in Inorganic and Water Treatment. He is the DVC (Research, Innovation, Commercialization and Internationalization), VUT, South Africa.
摘要本研究评估了尼日利亚西北部湿地生态系统的金属污染，该生态系统易受农业、工业和城市化等多种来源的污染。该研究分析了该地区10个地点的湿地土壤和植物中铅(Pb)、铜(Cu)、铬(Cr)、镉(Cd)和铁(Fe)的浓度。采用污染系数、修正污染度、Nemerow污染指数和污染负荷指数等污染指数确定研究区金属污染程度，计算转移因子评价研究区金属从土壤向植物转移的潜力。结果表明，湿地土壤和植物中的金属浓度因地点和感兴趣的金属而有很大差异，有些地点由于农业和采矿活动而具有较高的浓度。污染指数表明，研究区金属污染总体为中度至重度污染，部分金属从土壤向植物转移的潜力较大。这项研究为了解尼日利亚北部一些湿地土壤和植物中金属污染的程度和严重程度提供了有价值的见解。关键词:Wetlandspollution indicestransfer factorsource apportionmentNigeria AcknowledgementsThe作者感谢联邦大学Dutse尤其是实验室的管理部门提供有利环境和可用设备和试剂在整个研究团队曾成功的这个手稿的编译。m.d. Saeed教授在整个研究过程中的努力也因其对项目的专业监督而得到认可。披露声明作者未报告潜在的利益冲突。本工作是由尼日利亚高等教育信托基金(TETFUND)资助的研究成果。sa 'adatu E. MohammedSa 'adatu E. Mohammed是尼日利亚杜塞联邦大学化学系分析化学高级讲师，对污染/补救研究以及纳米颗粒的开发、回收和处置有着浓厚的兴趣。Olushola S. Ayanda，工业化学副教授。他专攻纳米技术和环境化学。simphiwe M. Nelana专攻无机和水处理。他是南非科技大学的研究、创新、商业化和国际化主任。
{"title":"Assessment of environmental pollution using indices, transfer factor and source apportionment in soils and plants of wetlands in Northern Nigeria","authors":"Sa’adatu E. Mohammed, Olushola S. Ayanda, Simphiwe M. Nelana","doi":"10.1080/02757540.2023.2269139","DOIUrl":"https://doi.org/10.1080/02757540.2023.2269139","url":null,"abstract":"ABSTRACTThis study assessed metal pollution in wetland ecosystems in North-western Nigeria, which is susceptible to pollution from various sources including agriculture, industry and urbanisation. The study analysed the concentrations of lead (Pb), copper (Cu), chromium (Cr), cadmium (Cd) and iron (Fe) in wetland soils and plants from 10 sites in the region. Pollution indices, including contamination factor, modified degree of contamination, Nemerow pollution index and pollution load index, were used to determine the extent of metal pollution in the study area, while transfer factors were calculated to assess the potential for metal transfer from soils to plants. The results showed that metal concentrations in wetland soils and plants varied widely depending on the location and the metal of interest, with some sites showing higher concentrations due to agricultural and mining activities. The pollution indices indicated that metal pollution was generally moderate to highly polluted in the study areas, with some metals showing higher potential for transfer from soil to plants than others. This study provides valuable insights into the extent and severity of metal pollution in some wetland soils and plants in Northern Nigeria.KEYWORDS: Wetlandspollution indicestransfer factorsource apportionmentNigeria AcknowledgementsThe authors are thankful to the management of Federal University Dutse especially the Laboratory division for providing the enabling environment and available equipment and reagents throughout this research to the team who worked for the success of this manuscript’s compilation. The efforts of Professor M. D. Saeed in the entire research carried out are also acknowledged for his expert supervision of the project.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is a product a research funded by Tertiary Education Trust Fund (TETFUND) Nigeria.Notes on contributorsSa’adatu E. MohammedSa’adatu E. Mohammed is a senior lecturer of Analytical chemistry with the Department of Chemistry Federal University Dutse Nigeria who has a keen interest in pollution/remediation studies and nano particles development, recovery and disposal.Olushola S. AyandaOlushola S. Ayanda is an Associate Professor of Industrial Chemistry. He specialises in Nanotechnology and Environmental ChemistrySimphiwe M. NelanaSimphiwe M. Nelana specializes in Inorganic and Water Treatment. He is the DVC (Research, Innovation, Commercialization and Internationalization), VUT, South Africa.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135728690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-18DOI: 10.1080/02757540.2023.2263427
María I. López-Torres, José A. Sosa-Olivier, José R. Laines-Canepa, Alejandro Padilla-Rivera, Irma Santiago-Cortez, Fabiola J. Jiménez-Hernández
ABSTRACTSargassum fluitans was composted alongside sheep manure, in a transformative process that significantly enhanced the algal material’s properties. Post the screening/washing/screening pretreatment, the content of total volatile solids escalated to 73.20%, while ash content reduced to 16.45%. Concurrently, lignin values surged to 30.12% as the biodegradability factor declined to 21%. The pretreatment decreased electrical conductivity from 11.60 to 1.32 DS/m. Employing a central composite design and response surface analysis pinpointed the optimal substrate combinations for carbon/nitrogen ratios of 35:1 and 25:1. The chosen combinations presented a high coefficient of determination (R2 = 0.9589, carbon/nitrogen ratio; R2 = 0.6584, pH), indicative of a robust statistical fit. Over a 45-day period, composting was conducted using bioreactors or biopiles, maintaining near-neutral pH values and temperatures slightly above ambient levels. The composting process reduced up to 94% of fecal coliforms in the 1:1 combination. Physicochemical analyses confirmed that the final product is a valuable compost-soil improver, with great potential for usage in organic agriculture, reforestation, and urban green spaces. Hence, this research underscores composting as an efficient technique in managing organic waste, including the emergent and seasonal Sargassum fluitans, thus addressing a pressing environmental concern with an innovative, effective solution.KEYWORDS: Central composite methodcompostingresponse surfacewaste AcknowledgementsWe appreciate the attention and kindness of those responsible for the ‘El Rodeo’ Ranch, a sheep meat and milk production unit. For the donation of manure for carrying out the experimental work. We recognize the facilities granted by the Council of Science and Technology of the State of Tabasco (CCYTET).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Consejo de Ciencia y Tecnología del Estado de Tabasco.Notes on contributorsMaría I. López-TorresMaría I. López-Torres Environmental Engineer Student. Contribution: Physicochemical and experimental analyses.José A. Sosa-OlivierJosé A. Sosa-Olivier PhD in Science in ecology and management tropical system student and Research Professor. Contribution: Central composite design, data manipulation and response surface analysis.José R. Laines-CanepaJosé R. Laines-Canepa PhD in Science in ecology and management tropical system and Head of pilot plant 3 – treatment of air and solid waste. Contribution: Bibliographic review and application of the NMX-AA-180-SCFI-2018 standard.Alejandro Padilla-RiveraAlejandro Padilla-Rivera PhD in Sustainability and urban studies, and Research Professor. Contribution: Literature review and language translation.Irma Santiago-CortezIrma Santiago-Cortez. Environmental Engineer Student. Contribution: Microbiological and physicochemical analysis.Fabiola J. Jiménez-Hernández
摘要将马尾藻与羊粪一起堆肥，在一个转化过程中显著提高了藻类材料的性能。经筛选/洗涤/筛选预处理后，总挥发性固形物含量上升至73.20%，灰分含量下降至16.45%。同时，木质素值上升至30.12%，生物降解系数下降至21%。预处理后电导率由11.60降至1.32 DS/m。采用中心复合设计和响应面分析确定了碳氮比为35:1和25:1的最佳底物组合。所选组合具有较高的决定系数(R2 = 0.9589，碳氮比;R2 = 0.6584, pH)，表明统计拟合很好。在45天的时间里，使用生物反应器或生物菌进行堆肥，保持接近中性的pH值和略高于环境水平的温度。堆肥过程在1:1的组合中减少了高达94%的粪便大肠菌群。理化分析证实，最终产物是一种有价值的堆肥-土壤改良剂，在有机农业、再造林和城市绿地中具有巨大的应用潜力。因此，本研究强调堆肥是一种管理有机废物的有效技术，包括新兴和季节性马尾藻，从而以创新，有效的解决方案解决紧迫的环境问题。关键词:中心复合法堆肥响应面废弃物致谢感谢“El Rodeo”牧场，一个羊肉和牛奶生产单位的负责人的关注和善意。为开展实验工作捐赠粪便。我们承认塔巴斯科州科学技术委员会(CCYTET)授予的设施。披露声明作者未报告潜在的利益冲突。本研究得到了Tecnologí-a del Estado de Tabasco科学委员会的支持。关于contributorsMaría I. López-TorresMaría I. López-Torres的说明。贡献:物理化学和实验分析。josise A. Sosa-Olivier生态学和管理学博士，热带系统学生和研究教授。贡献:中心复合设计，数据处理和响应面分析。热带系统生态学和管理学博士，空气和固体废物处理试验工厂3负责人。贡献:NMX-AA-180-SCFI-2018标准的书目审查和应用。Alejandro Padilla-Rivera可持续发展和城市研究博士，研究教授。贡献:文献综述和语言翻译。Irma Santiago-Cortez。环境工程专业学生贡献:微生物和理化分析。Fabiola J. Jiménez-HernándezFabiola J. Jiménez-Hernández(热带系统生态学与管理学博士研究生)。贡献:微生物分析。
{"title":"Aerobic biotransformation of <i>Sargassum fluitans</i> in combination with sheep manure: optimization of control variables","authors":"María I. López-Torres, José A. Sosa-Olivier, José R. Laines-Canepa, Alejandro Padilla-Rivera, Irma Santiago-Cortez, Fabiola J. Jiménez-Hernández","doi":"10.1080/02757540.2023.2263427","DOIUrl":"https://doi.org/10.1080/02757540.2023.2263427","url":null,"abstract":"ABSTRACTSargassum fluitans was composted alongside sheep manure, in a transformative process that significantly enhanced the algal material’s properties. Post the screening/washing/screening pretreatment, the content of total volatile solids escalated to 73.20%, while ash content reduced to 16.45%. Concurrently, lignin values surged to 30.12% as the biodegradability factor declined to 21%. The pretreatment decreased electrical conductivity from 11.60 to 1.32 DS/m. Employing a central composite design and response surface analysis pinpointed the optimal substrate combinations for carbon/nitrogen ratios of 35:1 and 25:1. The chosen combinations presented a high coefficient of determination (R2 = 0.9589, carbon/nitrogen ratio; R2 = 0.6584, pH), indicative of a robust statistical fit. Over a 45-day period, composting was conducted using bioreactors or biopiles, maintaining near-neutral pH values and temperatures slightly above ambient levels. The composting process reduced up to 94% of fecal coliforms in the 1:1 combination. Physicochemical analyses confirmed that the final product is a valuable compost-soil improver, with great potential for usage in organic agriculture, reforestation, and urban green spaces. Hence, this research underscores composting as an efficient technique in managing organic waste, including the emergent and seasonal Sargassum fluitans, thus addressing a pressing environmental concern with an innovative, effective solution.KEYWORDS: Central composite methodcompostingresponse surfacewaste AcknowledgementsWe appreciate the attention and kindness of those responsible for the ‘El Rodeo’ Ranch, a sheep meat and milk production unit. For the donation of manure for carrying out the experimental work. We recognize the facilities granted by the Council of Science and Technology of the State of Tabasco (CCYTET).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Consejo de Ciencia y Tecnología del Estado de Tabasco.Notes on contributorsMaría I. López-TorresMaría I. López-Torres Environmental Engineer Student. Contribution: Physicochemical and experimental analyses.José A. Sosa-OlivierJosé A. Sosa-Olivier PhD in Science in ecology and management tropical system student and Research Professor. Contribution: Central composite design, data manipulation and response surface analysis.José R. Laines-CanepaJosé R. Laines-Canepa PhD in Science in ecology and management tropical system and Head of pilot plant 3 – treatment of air and solid waste. Contribution: Bibliographic review and application of the NMX-AA-180-SCFI-2018 standard.Alejandro Padilla-RiveraAlejandro Padilla-Rivera PhD in Sustainability and urban studies, and Research Professor. Contribution: Literature review and language translation.Irma Santiago-CortezIrma Santiago-Cortez. Environmental Engineer Student. Contribution: Microbiological and physicochemical analysis.Fabiola J. Jiménez-Hernández","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135884775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-18DOI: 10.1080/02757540.2023.2269932
Elizabeth Teresita Romero Guzmán, Manuel Alejandro Pérez Brito
ABSTRACTAn analytical procedure for the determination of 13 elements in the water samples has been developed and validated. The elements (Al, Ba, Co, Cr, Cu, Mn, Mo, Ni, Pb, Th, Ti, U and Zn), in their dissolved form in water, were measured by high resolution sector field inductively coupled plasma mass spectrometry. A validation approach was used in accordance with the requirements of ISO/IEC 17025 and following the Eurachem guideline. Taking this into account, the parameters selectivity, detection limit, quantification limit, linear interval, sensitivity, bias, recovery percentage, repeatability, reproducibility, and uncertainty were systematically assessed. Detection limits from 0.0014 to 0.2363 ng mL−1 were obtained. Recovery values from 82.3 to 100.6% for the water certified reference material (CRM) were achieved. Repeatability from 1 to 3% and reproducibility from 1 to 4.1% were hit. The expanded uncertainty associated with each result was estimated by identifying the main uncertainty sources. The potential of the proposed analytical procedure for water, based on the low detection limits obtained, allows the method to determine very low concentration levels in water, such as small variations in its concentration. This methodology can potentially be applied to all types of water, because most of the elements analysed are listed in the official regulations for water.KEYWORDS: WaterICP-SFMSmethod validationISO-17025uncertaintytrace elements AcknowledgementsTo Eng. Fortunato Aguilar Hernández, Eng. Israel Bolaños Gutiérrez, Eng. Adrián Reyes del Valle and element users for their invaluable help. Thanks for LANAFONU to provide facilities and equipment to carry out the project.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors acknowledge the infrastructure and support of the National Nuclear Forensic Research Laboratory (Project No. 232762 CONACYT-2014, Modalidad A. Establecimiento de Laboratorio Nacional de Investigaciones en Forense Nuclear, LANAFONU.Notes on contributorsElizabeth Teresita Romero GuzmánElizabeth Teresita Romero-Guzmán is a Chemist, Master Degree in Ecology and Ph.D. in Engineering with an emphasis in water science at the Autonomous University of Mexico State. She has experience in analytical chemistry using conventional and radiochemical techniques, currently in high-resolution mass spectrometry to develop and optimise methods to measure heavy metals and radionuclides in environmental and different materials.Manuel Alejandro Pérez BritoManuel Alejandro Pérez Brito received his undergraduate education at the Technological Institute of Toluca and studied a Master's and PhD in Water Sciences at the Autonomous University of Mexico State. He is working in the area of mass spectrometry, with a focus on developing and optimising methods for determination of heavy metal and radionuclides in the environmental.
{"title":"Analytical methodology for the validation of multielemental detection of Al, Ba, Co, Cr, Cu, Mn, Mo, Ni, Pb, Th, Ti, U and Zn in water","authors":"Elizabeth Teresita Romero Guzmán, Manuel Alejandro Pérez Brito","doi":"10.1080/02757540.2023.2269932","DOIUrl":"https://doi.org/10.1080/02757540.2023.2269932","url":null,"abstract":"ABSTRACTAn analytical procedure for the determination of 13 elements in the water samples has been developed and validated. The elements (Al, Ba, Co, Cr, Cu, Mn, Mo, Ni, Pb, Th, Ti, U and Zn), in their dissolved form in water, were measured by high resolution sector field inductively coupled plasma mass spectrometry. A validation approach was used in accordance with the requirements of ISO/IEC 17025 and following the Eurachem guideline. Taking this into account, the parameters selectivity, detection limit, quantification limit, linear interval, sensitivity, bias, recovery percentage, repeatability, reproducibility, and uncertainty were systematically assessed. Detection limits from 0.0014 to 0.2363 ng mL−1 were obtained. Recovery values from 82.3 to 100.6% for the water certified reference material (CRM) were achieved. Repeatability from 1 to 3% and reproducibility from 1 to 4.1% were hit. The expanded uncertainty associated with each result was estimated by identifying the main uncertainty sources. The potential of the proposed analytical procedure for water, based on the low detection limits obtained, allows the method to determine very low concentration levels in water, such as small variations in its concentration. This methodology can potentially be applied to all types of water, because most of the elements analysed are listed in the official regulations for water.KEYWORDS: WaterICP-SFMSmethod validationISO-17025uncertaintytrace elements AcknowledgementsTo Eng. Fortunato Aguilar Hernández, Eng. Israel Bolaños Gutiérrez, Eng. Adrián Reyes del Valle and element users for their invaluable help. Thanks for LANAFONU to provide facilities and equipment to carry out the project.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors acknowledge the infrastructure and support of the National Nuclear Forensic Research Laboratory (Project No. 232762 CONACYT-2014, Modalidad A. Establecimiento de Laboratorio Nacional de Investigaciones en Forense Nuclear, LANAFONU.Notes on contributorsElizabeth Teresita Romero GuzmánElizabeth Teresita Romero-Guzmán is a Chemist, Master Degree in Ecology and Ph.D. in Engineering with an emphasis in water science at the Autonomous University of Mexico State. She has experience in analytical chemistry using conventional and radiochemical techniques, currently in high-resolution mass spectrometry to develop and optimise methods to measure heavy metals and radionuclides in environmental and different materials.Manuel Alejandro Pérez BritoManuel Alejandro Pérez Brito received his undergraduate education at the Technological Institute of Toluca and studied a Master's and PhD in Water Sciences at the Autonomous University of Mexico State. He is working in the area of mass spectrometry, with a focus on developing and optimising methods for determination of heavy metal and radionuclides in the environmental.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135884161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-18DOI: 10.1080/02757540.2023.2269140
Linton F. Munyai, Lutendo Mugwedi, Ryan J. Wasserman, Farai Dondofema, Eddie Riddell, Chad Keates, Tatenda Dalu
ABSTRACTThe study investigated the spatial distributions of selected metals, semi–metals and non–metals within a floodplain pan ecosystem in the Ramsar declared Makuleke Wetlands within the Makuleke Contractual National Park, in the northern Kruger National Park (South Africa), along varying soil depths (0–120 cm) at 20 cm intervals. The study identified significant differences in metal concentrations (i.e. Ca, Mn, Fe) and non–metals (i.e. C, S) across sediment depths. Metal and non–metal concentrations in surface sediments (0–40 cm) were generally high. Compared with the sediment quality guidelines, all measured metals were within the ‘no effect’ level across different sites and depths, except for one site (i.e. Mambvumbvanyi pan). In contrast, enrichment factors showed that K, Ca and Mg were enriched in sediments across all the floodplain pans and depths. Principal component and cluster analyses indicated that various metals originated from different sources. Although a high concentration of metals was found in the topsoil, no potential detrimental effects on the aquatic systems could be observed. Based on the findings, this study provides a baseline overview of sediment metal pollution that can inform effective management of these floodplain wetlands systems.KEYWORDS: Floodplain pansRamsar wetlandsmetalssediment profilesgeo-accumulation indexenrichment factor AcknowledgementsWe are grateful to South African National Parks (SANParks) Scientific Services for research permits (SS287), as well as to Mr Aubrey Maluleke the Park Coordinator of Makuleke Contractual National Park for allowing us to conduct research on the Makuleke concession area.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementAll the data collected during this research is presented in the manuscript.Credit authorship contribution statementLFM: Conceptualisation, Investigation, Data curation, Formal analysis, Writing – original draft, review & editing. LM: Investigation, Data curation, Supervision, Writing – review & editing. RJW: Supervision, Conceptualisation, Resources, Writing – original draft, review & editing. FD: Conceptualisation, Investigation, Resources, Data curation, Writing – original draft, review & editing. CK: Investigation, Writing – review & editing. ER: Permits, Data curation, Investigation, Writing – review & editing. TD: Conceptualisation, Investigation, Resources, Data curation, Formal analysis, Supervision, Writing – original draft, review & editing.Additional informationFundingWe greatly acknowledge the financial support of the University of Venda Niche [Grant UID: FSEA/21/GGES/02] and NRF Thuthuka [Grant UID: 138206]. Linton Munyai acknowledge funding from the National Research Foundation Postgraduate Bursary [UID: 129098]. Chad Keates and Ryan Wasserman acknowledge the South African Institute for Aquatic Biodiveristy (SAIAB) for logistical support.Notes on contributorsLinton F. MunyaiMr. Linton F.
{"title":"Metal and non–metal dynamics and distribution in soil profiles across selected pans in the Ramsar declared subtropical within a national protected area","authors":"Linton F. Munyai, Lutendo Mugwedi, Ryan J. Wasserman, Farai Dondofema, Eddie Riddell, Chad Keates, Tatenda Dalu","doi":"10.1080/02757540.2023.2269140","DOIUrl":"https://doi.org/10.1080/02757540.2023.2269140","url":null,"abstract":"ABSTRACTThe study investigated the spatial distributions of selected metals, semi–metals and non–metals within a floodplain pan ecosystem in the Ramsar declared Makuleke Wetlands within the Makuleke Contractual National Park, in the northern Kruger National Park (South Africa), along varying soil depths (0–120 cm) at 20 cm intervals. The study identified significant differences in metal concentrations (i.e. Ca, Mn, Fe) and non–metals (i.e. C, S) across sediment depths. Metal and non–metal concentrations in surface sediments (0–40 cm) were generally high. Compared with the sediment quality guidelines, all measured metals were within the ‘no effect’ level across different sites and depths, except for one site (i.e. Mambvumbvanyi pan). In contrast, enrichment factors showed that K, Ca and Mg were enriched in sediments across all the floodplain pans and depths. Principal component and cluster analyses indicated that various metals originated from different sources. Although a high concentration of metals was found in the topsoil, no potential detrimental effects on the aquatic systems could be observed. Based on the findings, this study provides a baseline overview of sediment metal pollution that can inform effective management of these floodplain wetlands systems.KEYWORDS: Floodplain pansRamsar wetlandsmetalssediment profilesgeo-accumulation indexenrichment factor AcknowledgementsWe are grateful to South African National Parks (SANParks) Scientific Services for research permits (SS287), as well as to Mr Aubrey Maluleke the Park Coordinator of Makuleke Contractual National Park for allowing us to conduct research on the Makuleke concession area.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementAll the data collected during this research is presented in the manuscript.Credit authorship contribution statementLFM: Conceptualisation, Investigation, Data curation, Formal analysis, Writing – original draft, review & editing. LM: Investigation, Data curation, Supervision, Writing – review & editing. RJW: Supervision, Conceptualisation, Resources, Writing – original draft, review & editing. FD: Conceptualisation, Investigation, Resources, Data curation, Writing – original draft, review & editing. CK: Investigation, Writing – review & editing. ER: Permits, Data curation, Investigation, Writing – review & editing. TD: Conceptualisation, Investigation, Resources, Data curation, Formal analysis, Supervision, Writing – original draft, review & editing.Additional informationFundingWe greatly acknowledge the financial support of the University of Venda Niche [Grant UID: FSEA/21/GGES/02] and NRF Thuthuka [Grant UID: 138206]. Linton Munyai acknowledge funding from the National Research Foundation Postgraduate Bursary [UID: 129098]. Chad Keates and Ryan Wasserman acknowledge the South African Institute for Aquatic Biodiveristy (SAIAB) for logistical support.Notes on contributorsLinton F. MunyaiMr. Linton F.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135888455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-11DOI: 10.1080/02757540.2023.2266447
Ruijing Yang, Minquan Feng, Zimeng Liu, Guoguo Liu
ABSTRACTHeavy metals are a subject of widespread concern because of their persistence, potential toxicity, and accumulation in biological tissues. However, their biomagnification in food webs is still controversial and has not been studied in detail especially in freshwater ecosystems. This study investigated the trophic transfer and biomagnification of four heavy metals (Cu, Cd, Pb, and Hg) within the food web of the freshwater Lake Zhangze. The study showed that the trophic levels of aquatic consumers in the lake ranged from 2.00–4.53. The presence of Hg in sediments posed a strong ecological risk, and the integrated ecological risk was spatially reduced from the front of the dam to the tail of the reservoir. Planktivorous fish exhibited higher concentrations of Cu, Cd and Hg compared to other fish consumers. Heavy metals showed distinct bioaccumulation patterns within the food web, with Cu biomagnification primarily occurred at lower trophic levels, whereas Hg demonstrated biomagnification trends throughout the food web, while Cd and Pb rarely biomagnified within the food chain. Cu, Cd and Pb levels were effectively biodiluted with increasing biological trophic levels, whereas Hg levels increased with increasing trophic levels.KEYWORDS: Heavy metalsfood webbiomagnificationtrophic transferZhangze Lake AcknowledgementsWe are very grateful to Shanxi Zhangze Reservoir Management Co., Ltd. for allowing us to enter the field sites and for their assistance in the field work.Data availability statementThe data that support the findings of this study are available from the corresponding author upon reasonable request.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China: [grant no 51679191]; Shaanxi Provincial Natural Science Basic Research Program (Key Project): [grant no 2019JLM-60].Notes on contributorsRuijing YangRuijing Yang is a PhD student in environmental engineering, focusing on water ecology management and restoration.Minquan FengMinquan Feng is a professor in the State Key Laboratory of Eco-hydraulics in the Northwest Arid Region at the Xi'an University of Technology. He specializes in Water Environment Management and Ecological Restoration.Zimeng LiuZimeng Liu is master's students majoring in environmental engineering, and they focus on eutrophication management based on food web.Guoguo LiuGuoguo Liu is master's students majoring in environmental engineering, and they focus on eutrophication management based on food web.
{"title":"Trophic transfer and biomagnification of four heavy metals in freshwater food web: a case study of Zhangze Lake","authors":"Ruijing Yang, Minquan Feng, Zimeng Liu, Guoguo Liu","doi":"10.1080/02757540.2023.2266447","DOIUrl":"https://doi.org/10.1080/02757540.2023.2266447","url":null,"abstract":"ABSTRACTHeavy metals are a subject of widespread concern because of their persistence, potential toxicity, and accumulation in biological tissues. However, their biomagnification in food webs is still controversial and has not been studied in detail especially in freshwater ecosystems. This study investigated the trophic transfer and biomagnification of four heavy metals (Cu, Cd, Pb, and Hg) within the food web of the freshwater Lake Zhangze. The study showed that the trophic levels of aquatic consumers in the lake ranged from 2.00–4.53. The presence of Hg in sediments posed a strong ecological risk, and the integrated ecological risk was spatially reduced from the front of the dam to the tail of the reservoir. Planktivorous fish exhibited higher concentrations of Cu, Cd and Hg compared to other fish consumers. Heavy metals showed distinct bioaccumulation patterns within the food web, with Cu biomagnification primarily occurred at lower trophic levels, whereas Hg demonstrated biomagnification trends throughout the food web, while Cd and Pb rarely biomagnified within the food chain. Cu, Cd and Pb levels were effectively biodiluted with increasing biological trophic levels, whereas Hg levels increased with increasing trophic levels.KEYWORDS: Heavy metalsfood webbiomagnificationtrophic transferZhangze Lake AcknowledgementsWe are very grateful to Shanxi Zhangze Reservoir Management Co., Ltd. for allowing us to enter the field sites and for their assistance in the field work.Data availability statementThe data that support the findings of this study are available from the corresponding author upon reasonable request.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China: [grant no 51679191]; Shaanxi Provincial Natural Science Basic Research Program (Key Project): [grant no 2019JLM-60].Notes on contributorsRuijing YangRuijing Yang is a PhD student in environmental engineering, focusing on water ecology management and restoration.Minquan FengMinquan Feng is a professor in the State Key Laboratory of Eco-hydraulics in the Northwest Arid Region at the Xi'an University of Technology. He specializes in Water Environment Management and Ecological Restoration.Zimeng LiuZimeng Liu is master's students majoring in environmental engineering, and they focus on eutrophication management based on food web.Guoguo LiuGuoguo Liu is master's students majoring in environmental engineering, and they focus on eutrophication management based on food web.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136208956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.1080/02757540.2023.2263436
Mohammad Shahid, Mohammad Saghir Khan, Asad Syed, Abdallah M. Elgorban, John Pichtel, Ling Shing Wong
ABSTRACTConsidering the excessive pesticide pollution in the environment, atrazine (ATZ), butachlor (BCR) and quizalofop-p-ethyl (QUIZ) were selected to assess their toxic effect on Rhodococcus erythropolis PSB-6 (NCBI Accession No. MG028649). MIC values of ATZ, BCR and QUIZ to R. erythropolis were determined to be 100, 200 and 150 μM, respectively. Biomarker enzymatic assays including LPO, LDH and oxidative stress (CAT) induced by herbicides represented significant (p ≤ 0.005) toxicity towards strain PSB-6. Herbicide-induced morphological changes viz. aberrant margins; cellular cracking and distortion/damage in R. erythropolis cells were apparent under SEM observation. Furthermore, herbicide-treated and DAPI (4’,6-diamidino-2-phenylindole)-stained cells showed concentration-dependent reduction in cellular permeability as revealed under CLSM. Furthermore, herbicides displayed toxicity towards bioactive molecules of PSB-6 in a dose-related manner. Among them, ATZ imparted maximum negative effect, where it reduced the bacterial production of IAA, ACC deaminase and 2, 3-DHBA by 68% (p ≤ 0.001), 75% (p ≤ 0.001), and 83% (p ≤ 0.005), respectively, over control. Additionally, following herbicide exposure, bacterial counts (log10 CFU mL−1) were reduced. Higher concentrations of ATZ and BCR completely reduced the growth patten of strain PSB-6. The current investigation provides an insight into a mechanistic approach of chemical herbicide-induced hazard toward a beneficial soil isolate. Careful monitoring is therefore necessary before agricultural application of pesticides.KEYWORDS: Pesticides stressRhodococcus erythropolisEnzymatic profileBacterial activityCellular viabilityActive biomolecules AcknowledgementsThe authors extend their appreciation to the Researchers Supporting Project number (RSP2023R367), King Saud University, Saudi Arabia.Disclosure statementNo potential conflict of interest was reported by the author(s).Author contributionsConceptualisation, M.S. and M.S.K,; methodology, M.S.; software, M.S., A.S.; validation, M.S., M.S.K and A.S; formal analysis, M.S and M.S.K., and A.M.E.; investigation, M.S. and M.S.K; resources, M.S., M.S.K., A.S and A.M.E.; data curation, M.S.; writing – original draft preparation, M.S., and M.S.K; writing – review and editing, M.S., J.P., and M.S.K.; visualisation, M.S.K., and J.P.; supervision, M.S.K.; project administration, M.S. and M.S.K; funding acquisition, A.S., A.M.E., and L.S.W. All authors have read and agreed to the published version of the manuscript.Additional informationFundingThis research was funded by the Researchers Supporting Project number [RSP2023R367], King Saud University, Saudi Arabia.Notes on contributorsMohammad ShahidMohammad Shahid is a postdoctoral fellow at ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, U.P, India. He obtained his PhD (Agricultural Microbiology) from Aligarh Muslim University, Aligarh, India. He has published a large number of papers in
{"title":"Effect of herbicides on cellular growth, microbiological and physiological activities of an identified rhizosphere isolate <i>Rhodococcus erythropolis</i>","authors":"Mohammad Shahid, Mohammad Saghir Khan, Asad Syed, Abdallah M. Elgorban, John Pichtel, Ling Shing Wong","doi":"10.1080/02757540.2023.2263436","DOIUrl":"https://doi.org/10.1080/02757540.2023.2263436","url":null,"abstract":"ABSTRACTConsidering the excessive pesticide pollution in the environment, atrazine (ATZ), butachlor (BCR) and quizalofop-p-ethyl (QUIZ) were selected to assess their toxic effect on Rhodococcus erythropolis PSB-6 (NCBI Accession No. MG028649). MIC values of ATZ, BCR and QUIZ to R. erythropolis were determined to be 100, 200 and 150 μM, respectively. Biomarker enzymatic assays including LPO, LDH and oxidative stress (CAT) induced by herbicides represented significant (p ≤ 0.005) toxicity towards strain PSB-6. Herbicide-induced morphological changes viz. aberrant margins; cellular cracking and distortion/damage in R. erythropolis cells were apparent under SEM observation. Furthermore, herbicide-treated and DAPI (4’,6-diamidino-2-phenylindole)-stained cells showed concentration-dependent reduction in cellular permeability as revealed under CLSM. Furthermore, herbicides displayed toxicity towards bioactive molecules of PSB-6 in a dose-related manner. Among them, ATZ imparted maximum negative effect, where it reduced the bacterial production of IAA, ACC deaminase and 2, 3-DHBA by 68% (p ≤ 0.001), 75% (p ≤ 0.001), and 83% (p ≤ 0.005), respectively, over control. Additionally, following herbicide exposure, bacterial counts (log10 CFU mL−1) were reduced. Higher concentrations of ATZ and BCR completely reduced the growth patten of strain PSB-6. The current investigation provides an insight into a mechanistic approach of chemical herbicide-induced hazard toward a beneficial soil isolate. Careful monitoring is therefore necessary before agricultural application of pesticides.KEYWORDS: Pesticides stressRhodococcus erythropolisEnzymatic profileBacterial activityCellular viabilityActive biomolecules AcknowledgementsThe authors extend their appreciation to the Researchers Supporting Project number (RSP2023R367), King Saud University, Saudi Arabia.Disclosure statementNo potential conflict of interest was reported by the author(s).Author contributionsConceptualisation, M.S. and M.S.K,; methodology, M.S.; software, M.S., A.S.; validation, M.S., M.S.K and A.S; formal analysis, M.S and M.S.K., and A.M.E.; investigation, M.S. and M.S.K; resources, M.S., M.S.K., A.S and A.M.E.; data curation, M.S.; writing – original draft preparation, M.S., and M.S.K; writing – review and editing, M.S., J.P., and M.S.K.; visualisation, M.S.K., and J.P.; supervision, M.S.K.; project administration, M.S. and M.S.K; funding acquisition, A.S., A.M.E., and L.S.W. All authors have read and agreed to the published version of the manuscript.Additional informationFundingThis research was funded by the Researchers Supporting Project number [RSP2023R367], King Saud University, Saudi Arabia.Notes on contributorsMohammad ShahidMohammad Shahid is a postdoctoral fellow at ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, U.P, India. He obtained his PhD (Agricultural Microbiology) from Aligarh Muslim University, Aligarh, India. He has published a large number of papers in","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACTCurrent environmental issues include heavy metal contamination. Cadmium pollution in aquatic environments harms aquatic creatures and can pass to people through food chains. Cadmium poisoning damages bones, kidneys and causes cancer. Tubifex tubifex is a well-known water pollution indicator because of its good adaptation power in environmental pollution. Tubifex sp. is chosen as the test animal in this study since it is an indicator species and also a model non-target organism in ecotoxicology. The aim of this present work is to assess the toxicity of cadmium nitrate on Tubifex tubifex as a biomarker. Acute toxicity of cadmium nitrate was analysed by measuring the 96 h LC50 value. Physical observations revealed that cadmium induced autotomy of the caudal region of the worm and induced more mucus secretion. Behavioural alterations like changes in mucous secretion, clumping tendency and wrinkling effect were observed in cadmium-treated worms. Antioxidant enzymes level (MDA, CAT and SOD) increased significantly on cadmium nitrate exposure. In general, biomarker data show that cadmium exposure has stress-related consequences at the biochemical and physiological levels, reducing the overall health and survival of such animals.Highlights The toxicity of the heavy metal cadmium in acute and sub-acute levels was investigated in Tubifex tubifex.The goal of this study was to look at the effects of cadmium on oxidative stress and behavioural biomarkers in T. tubifexSublethal cadmium exposure can impact the physiological functioning of annelids in the wild.KEYWORDS: Cadmiumacute toxicityTubifex tubifex; heavy metaloxidative stress AcknowledgmentsWe are thankful to the Department of Zoology, The University of Burdwan for providing the laboratory facilities.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availabilityThe datasets generated during and/or analysed during the current study are available from the corresponding author upon reasonable request.Additional informationNotes on contributorsNeha MajumdarNeha Majumdar is currently working as a Research Scholar in the Post Graduate Department of Conservation Biology, Durgapur Government College, Paschim Bardhaman, West Bengal, India. She is working in the field of ecotoxicology and fishery sciences. Her area includes assessing the role of heavy metals and their effects on aquatic organisms, measuring the stress enzymes.Nimai Chandra SahaProf. Nimai Chandra Saha is currently working as Professor in Zoology, Bidhannagar College, Kolkata, West Bengal. Prof. Saha is the former Vice Chancellor, The University of Burdwan (2016-2023). He has a long and vast experience in academia and administration. At present he has published 200 papers, review articles in various national and international repute journals. 12 scholars were already awarded Ph.D. under his supervision while 6 Ph.D. scholars are currently working under his guidance. Already 8 scholars were received Po
{"title":"Acute and sub-acute toxic effects of cadmium to freshwater tropical oligochaete <i>Tubifex tubifex</i> with special reference to oxidative stress and behavioural biomarkers","authors":"Neha Majumdar, Nimai Chandra Saha, Priyajit Banerjee, Tapajit Bhattacharya, Shubhajit Saha","doi":"10.1080/02757540.2023.2263439","DOIUrl":"https://doi.org/10.1080/02757540.2023.2263439","url":null,"abstract":"ABSTRACTCurrent environmental issues include heavy metal contamination. Cadmium pollution in aquatic environments harms aquatic creatures and can pass to people through food chains. Cadmium poisoning damages bones, kidneys and causes cancer. Tubifex tubifex is a well-known water pollution indicator because of its good adaptation power in environmental pollution. Tubifex sp. is chosen as the test animal in this study since it is an indicator species and also a model non-target organism in ecotoxicology. The aim of this present work is to assess the toxicity of cadmium nitrate on Tubifex tubifex as a biomarker. Acute toxicity of cadmium nitrate was analysed by measuring the 96 h LC50 value. Physical observations revealed that cadmium induced autotomy of the caudal region of the worm and induced more mucus secretion. Behavioural alterations like changes in mucous secretion, clumping tendency and wrinkling effect were observed in cadmium-treated worms. Antioxidant enzymes level (MDA, CAT and SOD) increased significantly on cadmium nitrate exposure. In general, biomarker data show that cadmium exposure has stress-related consequences at the biochemical and physiological levels, reducing the overall health and survival of such animals.Highlights The toxicity of the heavy metal cadmium in acute and sub-acute levels was investigated in Tubifex tubifex.The goal of this study was to look at the effects of cadmium on oxidative stress and behavioural biomarkers in T. tubifexSublethal cadmium exposure can impact the physiological functioning of annelids in the wild.KEYWORDS: Cadmiumacute toxicityTubifex tubifex; heavy metaloxidative stress AcknowledgmentsWe are thankful to the Department of Zoology, The University of Burdwan for providing the laboratory facilities.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availabilityThe datasets generated during and/or analysed during the current study are available from the corresponding author upon reasonable request.Additional informationNotes on contributorsNeha MajumdarNeha Majumdar is currently working as a Research Scholar in the Post Graduate Department of Conservation Biology, Durgapur Government College, Paschim Bardhaman, West Bengal, India. She is working in the field of ecotoxicology and fishery sciences. Her area includes assessing the role of heavy metals and their effects on aquatic organisms, measuring the stress enzymes.Nimai Chandra SahaProf. Nimai Chandra Saha is currently working as Professor in Zoology, Bidhannagar College, Kolkata, West Bengal. Prof. Saha is the former Vice Chancellor, The University of Burdwan (2016-2023). He has a long and vast experience in academia and administration. At present he has published 200 papers, review articles in various national and international repute journals. 12 scholars were already awarded Ph.D. under his supervision while 6 Ph.D. scholars are currently working under his guidance. Already 8 scholars were received Po","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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