Pub Date : 2023-09-27DOI: 10.1080/02757540.2023.2263444
Zehra Alkan, Elif Kaval Oğuz, Ahmet Regaib Oğuz
ABSTRACTThe Van fish is an endemic carp species living in Lake Van, one of the largest soda lakes in the world. Fluvalinate is a pesticide used extensively in the Lake Van basin. In the present study, the effects of sublethally applied fluvalinate on mucous cells in Van fish gill tissue after 48, 72, and 96 h were determined histochemically. Histopathological lesions were observed in the gills of the fish exposed to fluvalinate in a time-dependent manner. The concentrations of neutral glycoconjugates, acidic glycoconjugates, sulfated acidic glycoconjugates, and strongly acidic glycoconjugates in the mucous cells increased in the gills of the Van fish during the exposure period. At the same time, the area and number of mucous cells increased during fluvalinate exposure. As a result, fluvalinate caused an increase in mucous secretion and content in Van fish gills.KEYWORDS: Fluvalinateglycoconjugatehistopathologypesticideteleost Disclosure statementNo potential conflict of interest was reported by the authors.Ethics approvalAll of the animal experimental procedures were performed in accordance with the animal study protocols approved by the Animal Researchers Local Ethic Committee of Van Yüzüncü Yıl University (protocol no: 2018/05) and the Republic of Turkey Ministry of Agriculture and Forestry (31/05/2018).Availability of data and materialAll relevant data are within the paper, and those are available at the corresponding author.Authors’ contributionsAhmet Regaib Oğuz and Elif Kaval Oğuz conceived the study and designed the experiments. Elif Kaval Oğuz and Zehra Alkan carried out the histology analysed the data. Ahmet Regaib Oğuz and Elif Kaval Oğuz wrote and revised the manuscript. All authors read and approved the final manuscript.Additional informationNotes on contributorsZehra AlkanZehra Alkan completed her doctorate at Van Yüzüncü Yıl University. His studies focused on fish physiology.Elif Kaval OğuzElif Kaval Oğuz is an associate professor in the Department of Science Education, Van Yüzüncü Yıl University, Turkey. She obtained her PhD in Neuroscience from Medicine Faculty. She is currently working with cell cultures.Ahmet Regaib OğuzAhmet Regaib Oğuz is a professor in the Department of Biology, Van Yüzüncü Yıl University, Turkey. His research focuses on ecotoxicity and osmoregulation.
{"title":"Investigation of mucus cell change in gills of van fish ( <i>Alburnus tarichi</i> , Güldenstädt, 1814) treated with fluvalinate","authors":"Zehra Alkan, Elif Kaval Oğuz, Ahmet Regaib Oğuz","doi":"10.1080/02757540.2023.2263444","DOIUrl":"https://doi.org/10.1080/02757540.2023.2263444","url":null,"abstract":"ABSTRACTThe Van fish is an endemic carp species living in Lake Van, one of the largest soda lakes in the world. Fluvalinate is a pesticide used extensively in the Lake Van basin. In the present study, the effects of sublethally applied fluvalinate on mucous cells in Van fish gill tissue after 48, 72, and 96 h were determined histochemically. Histopathological lesions were observed in the gills of the fish exposed to fluvalinate in a time-dependent manner. The concentrations of neutral glycoconjugates, acidic glycoconjugates, sulfated acidic glycoconjugates, and strongly acidic glycoconjugates in the mucous cells increased in the gills of the Van fish during the exposure period. At the same time, the area and number of mucous cells increased during fluvalinate exposure. As a result, fluvalinate caused an increase in mucous secretion and content in Van fish gills.KEYWORDS: Fluvalinateglycoconjugatehistopathologypesticideteleost Disclosure statementNo potential conflict of interest was reported by the authors.Ethics approvalAll of the animal experimental procedures were performed in accordance with the animal study protocols approved by the Animal Researchers Local Ethic Committee of Van Yüzüncü Yıl University (protocol no: 2018/05) and the Republic of Turkey Ministry of Agriculture and Forestry (31/05/2018).Availability of data and materialAll relevant data are within the paper, and those are available at the corresponding author.Authors’ contributionsAhmet Regaib Oğuz and Elif Kaval Oğuz conceived the study and designed the experiments. Elif Kaval Oğuz and Zehra Alkan carried out the histology analysed the data. Ahmet Regaib Oğuz and Elif Kaval Oğuz wrote and revised the manuscript. All authors read and approved the final manuscript.Additional informationNotes on contributorsZehra AlkanZehra Alkan completed her doctorate at Van Yüzüncü Yıl University. His studies focused on fish physiology.Elif Kaval OğuzElif Kaval Oğuz is an associate professor in the Department of Science Education, Van Yüzüncü Yıl University, Turkey. She obtained her PhD in Neuroscience from Medicine Faculty. She is currently working with cell cultures.Ahmet Regaib OğuzAhmet Regaib Oğuz is a professor in the Department of Biology, Van Yüzüncü Yıl University, Turkey. His research focuses on ecotoxicity and osmoregulation.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135536469","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}
ABSTRACT Lead is an environmental pollutant that causes remarkable damage to various organs in the human body, especially the nervous system. Removal of lead by conventional methods is costly, and therefore, in the current scenario, biosorption using fungi is extensively explored as they provide good metal uptake systems. The present study evaluated the Pb (II) biosorption potential of endophytic fungi Aspergillus flavus SGE34. The fungal isolate was obtained from the root of an indigenous medicinal plant of the Chhattisgarh region named Cleome viscosa Linn. The biosorption potential of dead fungal biomass was optimized at different operating parameters like contact time, pH, and temperature. The maximum biosorption values were found at pH 6.0 with an equilibrium time of 150 minutes at 350C. The Fourier transform infrared spectroscopy study revealed that the pattern of new absorption bands, altered absorption intensity, and shift in wavenumber of functional groups was deduced, due to interaction between metal ions and active sites of biosorbent. The present study concluded that A. flavus SGE34 has high metal tolerance and biosorption capacity; it could effectively remove lead from industrial effluents.
{"title":"Lead biosorption profiling of endophytic Aspergillus flavus SGE34 isolated from Cleome viscosa Linn.","authors":"Samiksha Sharma, Kishan Lal Tiwari, Shailesh Kumar Jadhav","doi":"10.1080/02757540.2023.2253224","DOIUrl":"https://doi.org/10.1080/02757540.2023.2253224","url":null,"abstract":"ABSTRACT\u0000 Lead is an environmental pollutant that causes remarkable damage to various organs in the human body, especially the nervous system. Removal of lead by conventional methods is costly, and therefore, in the current scenario, biosorption using fungi is extensively explored as they provide good metal uptake systems. The present study evaluated the Pb (II) biosorption potential of endophytic fungi Aspergillus flavus SGE34. The fungal isolate was obtained from the root of an indigenous medicinal plant of the Chhattisgarh region named Cleome viscosa Linn. The biosorption potential of dead fungal biomass was optimized at different operating parameters like contact time, pH, and temperature. The maximum biosorption values were found at pH 6.0 with an equilibrium time of 150 minutes at 350C. The Fourier transform infrared spectroscopy study revealed that the pattern of new absorption bands, altered absorption intensity, and shift in wavenumber of functional groups was deduced, due to interaction between metal ions and active sites of biosorbent. The present study concluded that A. flavus SGE34 has high metal tolerance and biosorption capacity; it could effectively remove lead from industrial effluents.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44588151","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}
ABSTRACT This study used the levels of pollutants and the histopathological analysis of the gonads and liver of Sarotherodon melanotheron sampled in Lake Nokoué and Lake Toho, both in Benin (West Africa) to assess the health status of the ecosystems. Sixty adults (30 males and 30 females) of this species were caught during the flooding seasons from both Lake Nokoué, and Lake Toho (as a reference). The physicochemical parameters of the water and the heavy metal contents (Pb, Cd, Hg) in water/sediment/fish of three sites (S1, S2, S3) in Lake Nokoué and two sites (S4, S5) in Lake Toho were analysed. Results confirm very strong organic status with organic pollution index ranging from 1.25 to 1.5. Pb, Cd, and Hg levels in the water/sediment/fish muscle tissue of Lake Nokoué were far exceeding international standards. The histopathology of gonads revealed testis-ova up to 40% in males and follicular atretic oocytes up to 33.33% in females, indicated oestrogenic effects from the pollutants with a delay of spermatogenesis and stimulation of oogenesis. The histopathology of the liver revealed the presence of regressive changes. The findings call for actions to protect the ecosystem from pollution and attention in terms of health of humans consuming fish products from Lake Nokoué.
{"title":"Assessment of the health status of Lake Nokoué (Benin, West Africa) exposed to multiple pollutants during flood season","authors":"Agbohessi T Prudencio, Onibon Chabi, Pelebe Edéya Orobiyi Rodrigue, Mattah Dzorgbe Agbeko Precious, Guedegba Nicresse Léa, Imorou Toko Ibrahim, Chikou Antoine","doi":"10.1080/02757540.2023.2253225","DOIUrl":"https://doi.org/10.1080/02757540.2023.2253225","url":null,"abstract":"ABSTRACT This study used the levels of pollutants and the histopathological analysis of the gonads and liver of Sarotherodon melanotheron sampled in Lake Nokoué and Lake Toho, both in Benin (West Africa) to assess the health status of the ecosystems. Sixty adults (30 males and 30 females) of this species were caught during the flooding seasons from both Lake Nokoué, and Lake Toho (as a reference). The physicochemical parameters of the water and the heavy metal contents (Pb, Cd, Hg) in water/sediment/fish of three sites (S1, S2, S3) in Lake Nokoué and two sites (S4, S5) in Lake Toho were analysed. Results confirm very strong organic status with organic pollution index ranging from 1.25 to 1.5. Pb, Cd, and Hg levels in the water/sediment/fish muscle tissue of Lake Nokoué were far exceeding international standards. The histopathology of gonads revealed testis-ova up to 40% in males and follicular atretic oocytes up to 33.33% in females, indicated oestrogenic effects from the pollutants with a delay of spermatogenesis and stimulation of oogenesis. The histopathology of the liver revealed the presence of regressive changes. The findings call for actions to protect the ecosystem from pollution and attention in terms of health of humans consuming fish products from Lake Nokoué.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43954167","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 : 2023-08-09DOI: 10.1080/02757540.2023.2253220
Chahat Sharma, Pooja Sharma, Amit Kumar, Yashika Walia, Raman Kumar, Ahmad Umar, Ahmed A. Ibrahim, Mohd. Sayeed Akhtar, Abdulrab Ahmed M. Alkhanjaf, Sotirios Baskoutas
ABSTRACTThe excessive use of chemical substances such as pesticides, herbicides, and fungicides, along with other harmful practices, has disrupted the beneficial microflora in the soil. These harmful effects extend beyond the soil and can lead to the spread of dangerous diseases in both humans and animals. Pesticides are frequently applied in modern agriculture to boost crop production and meet the demands of a growing population. However, the accumulation of pesticides in the soil poses a threat to both the soil itself and the overall ecosystem. As pesticides enter the food chain, groundwater, and marine water, they have direct or indirect impacts on human health and negatively affect terrestrial and aquatic life. These chemical compounds contribute to various biological and microscopic contaminants, resulting in detrimental environmental consequences. Fortunately, certain microorganisms possess natural tolerance to pesticides and can survive under adverse conditions. Diazotrophs, which are nitrogen-fixing bacteria, have also been found to play a role in the biodegradation of toxic compounds released from pesticides, thereby contributing to a healthier environment. This review focuses on the essential microbial community involved in pesticide degradation, with particular emphasis on Diazotrophs. It explores their classification, mechanisms of pesticide degradation, and regulation under stress conditions. Understanding the characteristics of these essential microbes (Diazotrophs) operating in stressful environments is crucial for pesticide degradation. The study highlights the significant role of microbial diversity in the breakdown of xenobiotic pesticide compounds in the soil, emphasising the importance of an eco-friendly approach to improve agricultural practices, sustain soil fertility, promote crop production, and protect ecotoxicology.KEYWORDS: PesticideDiazotrophsSoilCropDegradationBacteria AcknowledgmentAuthors are thankful to Maharishi Markandeshwar (Deemed to Be University), Mullana for providing the work place and all the essential facilities to compile the manuscript. We also acknowledge to bioRendor tool for designing the template of figures. The authors are thankful to the Deanship of Scientific Research at Najran University, Najran, Kingdom of Saudi Arabia for funding under the Research Group funding program grant no. NU/RG/MRC/12/2.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availabilityThe datasets generated during the current study are available from the corresponding author on reasonable request.Statement and declarationsThe authors are declared that the manuscript is original and not submitted to any other journal for publication.Consent to publishAuthors have used bioRendor app for drawing figures used in manuscript. The authors acknowledge the app and given reference in figure legends.Additional informationNotes on contributorsChahat SharmaMs. Chahat Sharma is an efficient researc
她以研究和评论文章、书籍和书籍章节的形式为分子生物学领域做出了贡献。她在国内和国际同行评议期刊上发表了超过25篇文章。她目前的工作重点是利用分子方法表征具有农药降解能力的新型重氮养菌。她对利用CRISPR/Cas等基因编辑方法提高食品安全和环境可持续性的营养价值领域非常感兴趣。Amit KumarMr。Amit Kumar是印度安巴拉(哈里亚纳邦)穆拉纳大学Maharishi Markandeshwar(被认为是)的高效研究学者。他的研究领域是重氮营养体，也就是生物固氮。他参加过各种国内和国际会议。她以文章的形式对分子生物学领域做出了贡献。他目前的工作主要集中在谷物土壤系统的新型重氮营养菌的特征。Yashika WaliaDr。Yashika Walia是印度安巴拉(哈里亚纳邦)穆拉纳大学的助理教授。博士毕业于CSIR-IHBT国家重要性研究所(2016)。她的博士研究重点是了解苹果疤痕皮类病毒RNA的感染机制。她在植物分子病毒学和宿主-病原体相互作用方面具有专长。在攻读博士学位期间，她在植物病毒学和RNA生物学领域发表了多篇文章。她作为一名年轻的研究员在dbt区域生物技术中心工作，扩大了她的研究背景。在RCB，她的研究工作主要集中在植物免疫信号，她致力于破译信号分子-肌醇磷酸盐在介导水杨酸依赖的植物防御信号中的作用。她在RNA生物学、植物病理学、植物生理学、植物细胞报告、细胞与发育生物学前沿等知名期刊上发表了多篇研究论文。Raman Kumar自2011年以来一直担任印度哈里亚纳邦Mullana (Ambala) Maharishi Markendeshwar(被认为是大学)生物技术系的高级副教授。2007年至2010年，他还曾担任印度卡纳尔中央土壤盐分研究所土壤和作物管理部门的高级研究员。他在微生物和环境生物技术领域有近17年的教学和研究经验。他在各种国内和国际同行评审期刊上发表了65篇以上的出版物和04本书。他也是我们在该大学(M.M.)发起的研究期刊“Current Trends in Biotechnology and Chemical research”(eISSN 2321-0265;pISSN 2249-4073)的副主编，该期刊目前被包括CAS、Medical journal Links等许多知名数据库收录。他一直在环境生物技术领域工作，并从哈里亚纳邦DST获得了环境微生物学领域的重大项目。他开发了许多细菌和真菌菌株，用于去除废水中的重金属。目前的研究方向为工业废水微生物群对有毒污染物、农药、偶氮染料的生物修复与降解、重金属生物修复机制等。Ahmad Umar教授拥有印度阿里格尔穆斯林大学(Aligarh Muslim University, AMU)的生物科学学士学位和无机化学硕士学位，以及韩国全北国立大学(Chonbuk National University)的半导体和化学工程博士学位。2007-2008年，他在韩国全北国立大学未来能源材料和设备中心Brain Korea 21担任研究科学家。之后，他加入了沙特阿拉伯纳季兰的纳季兰大学化学系。他是一位杰出的化学教授，现任沙特阿拉伯纳吉兰大学传感器和电子设备前景中心(PCSED)副主任。Ahmad Umar教授专注于纳米材料在不同领域的生长、特性和高科技应用，例如气体、化学品和生物传感器、基于纳米材料的环境修复、生物材料等。他还专注于用于半导体纳米材料表征和应用的现代分析和光谱技术。他通过编辑世界上第一本关于金属氧化物纳米结构及其应用的手册系列(5卷集，3500印刷页，www.aspbs.com/mona)和半导体纳米技术百科全书手册系列(7卷集;www.aspbs.com/esn)，均由ASP. net发布。艾哈迈德A.易卜拉欣博士艾哈迈德。 易卜拉欣是沙特阿拉伯纳吉兰大学科学与艺术学院化学系和传感器与电子设备发展中心的助理教授。他的研究重点是纳米颗粒的合成、表征和各种应用。应用领域包括化工、气体、生物传感器、生物应用材料、生物材料等。细哔叽AkhtarDr。穆罕默德。赛义德·阿赫塔尔(Sayeed Akhtar)是印度北方邦沙贾汗普尔市甘地法伊兹-伊-阿姆学院的高级助理教授。他于2008年在印度阿里加尔穆斯林大学(AMU)获得博士学位，随后于2011年在瑞士巴塞尔大学(BIB)植物学研究所(2008-2010)和韩国全北国立大学(CBNU)进行博士后研究。2011年至2014年在埃塞俄比亚吉玛大学担任助理教授，2014年至2015年在马来西亚博特拉大学(UPM)热带农业研究所担任研究员。在过去的三年里，他连续被美国斯坦福大学评为世界前2%的科学家。阿赫塔尔博士在同行评议的期刊、会议论文集和书籍章节中撰写和合著了150多篇文章，并为国际出版商编辑了21本书。他的众多荣誉包括印度APSF颁发的年度最佳研究员奖(2016)，印度钦奈VIRA颁发的植物病理学杰出科学家奖(2017)，印度新德里AKS教育基金会颁发的全球教师奖(2018)以及印度普杜切里Sri Arvindo协会ZIIEI颁发的教师创新奖(2019年和2022年)。他是科学界的编辑委员会成员和几家高影响力国际期刊的审稿人。他目前的工作重点是分子生物技术、生物修复、生物矿化、纳米肥料和根际植物与微生物相互作用的纳米生物技术。Abdulrab Ahmed M. alkhanjf博士Abdulrab Ahmed M. Alkhanjaf是纳吉兰大学应用医学科学学院的副教授。他在学术(12年)和卫生(8年)领域有20年的经验。在学术界和几个卫生部门的工作经验使Abdulrab博士了解了不同的技术应用，从床边分析(护理点)到分子分析和恶性肿瘤研究。他在《国际声誉杂志》上发表了几篇论文。与BaskoutasProf。Sotirios Baskoutas博士毕业于希腊帕特雷大学物理系。他于2001年加入帕特雷大学材料科学系，现任教授(全职)。Baskoutas博士曾访问并在希腊以外的几所大学和研究所工作，如罗马大学物理系(意大利)、加拿大国家研究委员会微观结构科学研究所(加拿大渥太华)、马克斯·普朗克等离子体物理研究所(德国)、卡尔斯鲁厄国际纳米技术研究所(德国)、马克斯·普朗克固体研究所(德国斯图加特)、化学系、汉堡大学(德国)。他的研究兴趣主要集中在半导体纳米结构的理论和实验研究，重点是其电子和光学性质。
{"title":"A review on ecology implications and pesticide degradation using nitrogen fixing bacteria under biotic and abiotic stress conditions","authors":"Chahat Sharma, Pooja Sharma, Amit Kumar, Yashika Walia, Raman Kumar, Ahmad Umar, Ahmed A. Ibrahim, Mohd. Sayeed Akhtar, Abdulrab Ahmed M. Alkhanjaf, Sotirios Baskoutas","doi":"10.1080/02757540.2023.2253220","DOIUrl":"https://doi.org/10.1080/02757540.2023.2253220","url":null,"abstract":"ABSTRACTThe excessive use of chemical substances such as pesticides, herbicides, and fungicides, along with other harmful practices, has disrupted the beneficial microflora in the soil. These harmful effects extend beyond the soil and can lead to the spread of dangerous diseases in both humans and animals. Pesticides are frequently applied in modern agriculture to boost crop production and meet the demands of a growing population. However, the accumulation of pesticides in the soil poses a threat to both the soil itself and the overall ecosystem. As pesticides enter the food chain, groundwater, and marine water, they have direct or indirect impacts on human health and negatively affect terrestrial and aquatic life. These chemical compounds contribute to various biological and microscopic contaminants, resulting in detrimental environmental consequences. Fortunately, certain microorganisms possess natural tolerance to pesticides and can survive under adverse conditions. Diazotrophs, which are nitrogen-fixing bacteria, have also been found to play a role in the biodegradation of toxic compounds released from pesticides, thereby contributing to a healthier environment. This review focuses on the essential microbial community involved in pesticide degradation, with particular emphasis on Diazotrophs. It explores their classification, mechanisms of pesticide degradation, and regulation under stress conditions. Understanding the characteristics of these essential microbes (Diazotrophs) operating in stressful environments is crucial for pesticide degradation. The study highlights the significant role of microbial diversity in the breakdown of xenobiotic pesticide compounds in the soil, emphasising the importance of an eco-friendly approach to improve agricultural practices, sustain soil fertility, promote crop production, and protect ecotoxicology.KEYWORDS: PesticideDiazotrophsSoilCropDegradationBacteria AcknowledgmentAuthors are thankful to Maharishi Markandeshwar (Deemed to Be University), Mullana for providing the work place and all the essential facilities to compile the manuscript. We also acknowledge to bioRendor tool for designing the template of figures. The authors are thankful to the Deanship of Scientific Research at Najran University, Najran, Kingdom of Saudi Arabia for funding under the Research Group funding program grant no. NU/RG/MRC/12/2.Disclosure statementNo potential conflict of interest was reported by the author(s).Data availabilityThe datasets generated during the current study are available from the corresponding author on reasonable request.Statement and declarationsThe authors are declared that the manuscript is original and not submitted to any other journal for publication.Consent to publishAuthors have used bioRendor app for drawing figures used in manuscript. The authors acknowledge the app and given reference in figure legends.Additional informationNotes on contributorsChahat SharmaMs. Chahat Sharma is an efficient researc","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135746308","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 : 2023-08-09DOI: 10.1080/02757540.2023.2253222
Alistar Moy, Kabwe Nkongolo
ABSTRACT Microbial response to soil storage at low temperature in limed and unlimed samples has not been investigated. For this study, soil samples were kept at 4°C for six weeks. Soil microbial biomass was determined using phospholipid fatty acid analysis (PLFA). Nine enzymes were targeted including β-glucosidase (BG), cellobiohydrolase (CBH), β-N-acetylglucosaminidase (NAGase), aryl sulfatase (AS), acid phosphatase (AP), alkaline phosphatase (AlP), glycine aminopeptidase (GAP), leucine aminopeptidase (LAP), and peroxidase (PER). PLFA results revealed a significant increase in total microbial biomass in limed area compared to unlimed soil samples. Microbial biomass decreased during the first two weeks of storage and remained unchanged thereafter for both limed and unlimed samples. Analysis of microbial activities revealed that most enzymes inconsistently decreased over time during storage at 4°C. Activities of BG, CBH, NAGase, AlP, AS, GAP, LAP were significantly higher in limed compared to the unlimed samples. Overall, the levels of activities of most enzymes in limed soils decreased significantly after the second week of storage and remained unchanged thereafter. The reduction of enzyme activity in the unlimed soil samples varied over time, with some enzymes such as LAP increasing on the sixth week. PER activity decreased after two weeks and increased thereafter.
微生物对土壤低温贮藏在石灰和未石灰样品中的反应尚未研究。在本研究中，土壤样品在4°C下保存6周。采用磷脂脂肪酸分析法(PLFA)测定土壤微生物生物量。9种酶包括β-葡萄糖苷酶(BG)、纤维素生物水解酶(CBH)、β- n -乙酰氨基葡萄糖苷酶(NAGase)、芳基硫酸酯酶(AS)、酸性磷酸酶(AP)、碱性磷酸酶(AlP)、甘氨酸氨基肽酶(GAP)、亮氨酸氨基肽酶(LAP)和过氧化物酶(PER)。PLFA结果显示，与未加石灰的土壤样品相比，石灰区微生物总生物量显著增加。微生物生物量在前两周的储存期间有所下降，此后在石灰和未石灰的样品中保持不变。微生物活动分析显示，在4°C的储存过程中，大多数酶随着时间的推移而不一致地减少。处理过的样品中BG、CBH、NAGase、AlP、AS、GAP、LAP活性显著高于未处理过的样品。总体而言，石灰土壤中大多数酶的活性水平在贮藏第二周后显著下降，此后保持不变。土壤样品中酶活性的降低随时间的变化而变化，其中一些酶如LAP在第6周有所增加。PER活性在两周后下降，随后升高。
{"title":"Variation in microbial biomass and enzymatic activities in metal contaminated soils during storage at low temperature (4°C)","authors":"Alistar Moy, Kabwe Nkongolo","doi":"10.1080/02757540.2023.2253222","DOIUrl":"https://doi.org/10.1080/02757540.2023.2253222","url":null,"abstract":"ABSTRACT Microbial response to soil storage at low temperature in limed and unlimed samples has not been investigated. For this study, soil samples were kept at 4°C for six weeks. Soil microbial biomass was determined using phospholipid fatty acid analysis (PLFA). Nine enzymes were targeted including β-glucosidase (BG), cellobiohydrolase (CBH), β-N-acetylglucosaminidase (NAGase), aryl sulfatase (AS), acid phosphatase (AP), alkaline phosphatase (AlP), glycine aminopeptidase (GAP), leucine aminopeptidase (LAP), and peroxidase (PER). PLFA results revealed a significant increase in total microbial biomass in limed area compared to unlimed soil samples. Microbial biomass decreased during the first two weeks of storage and remained unchanged thereafter for both limed and unlimed samples. Analysis of microbial activities revealed that most enzymes inconsistently decreased over time during storage at 4°C. Activities of BG, CBH, NAGase, AlP, AS, GAP, LAP were significantly higher in limed compared to the unlimed samples. Overall, the levels of activities of most enzymes in limed soils decreased significantly after the second week of storage and remained unchanged thereafter. The reduction of enzyme activity in the unlimed soil samples varied over time, with some enzymes such as LAP increasing on the sixth week. PER activity decreased after two weeks and increased thereafter.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"39 1","pages":"688 - 709"},"PeriodicalIF":2.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48034219","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 : 2023-08-09DOI: 10.1080/02757540.2023.2256730
Osman Serdar, Zozan Ketenalp, Nuran Cikcikoglu Yildirim
ABSTRACT The purpose of this study was to measure the antioxidant parameters to examine the potential ameliorative impacts of the rare earth element (REE) cerium (Ce) in dimethoate (DM) induced toxicity in Dreissena polymorpha. Lethal concentration 50 (LC50) of DM for 96 h was measured. The antioxidant effect of Ce was investigated by exposure of 1/2 of the LC50 value of DM together with 4, 20 and, 100 mg/L of Ce to D. polymorpha. The responses of the biomarkers were determined by measuring the superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione (GSH) and malondialdehyde (MDA) levels. SOD, CAT, GPX and GSH levels were reduced (p < 0.05), while the MDA levels increased significantly (p < 0.05) in mussels exposed to DM. When DM was exposured together with Ce, it was observed that the MDA levels decreased, SOD, CAT, GPX and GSH levels increased during 24 and 96 h. The results of our study showed that Ce exerted a strong antioxidant effect on toxicity induced by DM. It has been shown that Ce may have a compensatory effect with the positive change in the antioxidant response of D. polymorpha to DM. This study is the first report about Ce and insecticide effects in bivalves.
{"title":"The potential ameliorative impacts of rare earth element cerium in dimethoate induced toxicity in freshwater mussel <i>Dreissena polymorpha</i>","authors":"Osman Serdar, Zozan Ketenalp, Nuran Cikcikoglu Yildirim","doi":"10.1080/02757540.2023.2256730","DOIUrl":"https://doi.org/10.1080/02757540.2023.2256730","url":null,"abstract":"ABSTRACT The purpose of this study was to measure the antioxidant parameters to examine the potential ameliorative impacts of the rare earth element (REE) cerium (Ce) in dimethoate (DM) induced toxicity in Dreissena polymorpha. Lethal concentration 50 (LC50) of DM for 96 h was measured. The antioxidant effect of Ce was investigated by exposure of 1/2 of the LC50 value of DM together with 4, 20 and, 100 mg/L of Ce to D. polymorpha. The responses of the biomarkers were determined by measuring the superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione (GSH) and malondialdehyde (MDA) levels. SOD, CAT, GPX and GSH levels were reduced (p < 0.05), while the MDA levels increased significantly (p < 0.05) in mussels exposed to DM. When DM was exposured together with Ce, it was observed that the MDA levels decreased, SOD, CAT, GPX and GSH levels increased during 24 and 96 h. The results of our study showed that Ce exerted a strong antioxidant effect on toxicity induced by DM. It has been shown that Ce may have a compensatory effect with the positive change in the antioxidant response of D. polymorpha to DM. This study is the first report about Ce and insecticide effects in bivalves.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135745452","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 : 2023-08-09DOI: 10.1080/02757540.2023.2253239
Lei Gong, Xiaofan Ma, Hongbin Xue, Chunqian Guo, Shijun Zhang, Jun Zhou, Haonan Zhang
ABSTRACTPlatanus orientalis Linn is widely distributed as a famous street tree, and its fallen leaves are a rich biomass resource. The fallen leaves of Platanus orientalis Linn (FLPOL) can be resourcefully treated by generating biogas through anaerobic digestion. This study aimed to assess the anaerobic digestion (AD) performance of FLPOL under different hydrothermal pretreatment (HTP) conditions (solid–liquid ratio 2–10%, residence times 0.5–2.5 h, and temperatures 120–200°C). The solid–liquid ratio, residence time, and temperature determined by energy balance calculation were 6%, 2.0 h, and 180°C, respectively, and the energy balance was 1.823 kJ/g biomass. Under these conditions, the methane yield of the process water was 56.85 mL/g·VS. The methanogenic potential, hydrolysis rate, maximum methanogenic rate, and the lag period obtained by the Fitzhugh first-order kinetic model and the modified Gompertz model were 101.803 mL/g·VS, 0.130 d−1, 14.207 mL/(g·VS·d) and 1.332 d, respectively. The research results suggest that HTP has an important role in promoting the large-scale AD application of FLPOL.KEYWORDS: Anaerobic digestionPlatanus orientalis Linn fallen leavesenergy balancehydrothermal pretreatmentkinetic simulation AcknowledgmentsThe authors acknowledge Xiaocong Liu and Tong Zuo for their support in the laboratory.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsLei GongLei Gong (male), Associate Professor, Master Supervisor, Cleaner Production Auditor, Member of Shandong Environmental Impact Assessment Expert Database, Director of Environment and Safety Teaching Experiment Center. Mainly engaged in the research work of biological treatment technology of odor and organic waste gas, anaerobic digestion of organic waste, microbial fuel cell and so on. Presided over and participated in more than 20 scientific research projects and 1 technology transformation project since work; participated in the formulation of 1 national standard and 1 industry group standard as the main editor, published more than 20 academic papers, edited 1 monograph, and participated in the editing 1 textbook; 17 authorised patents, including 4 invention patents and 1 invention patent assignment.Xiaofan MaXiaofan Ma (Female), graduate student, studying in Qingdao University of Science and Technology, College of Environment and Safety Engineering, the main research direction is the use of microbial fuel cell treatment of methane, has been published in the journal of the Sci paper (First authors).Hongbin XueHongbin Xue (male), Worked in the Safety and Environment Department of Shandong Diantu Ecological Environment Engineering Co.Chunqian GuoChunqian Guo (male), graduate student, studying in Qingdao University of Science and Technology, College of Environment and Safety Engineering, at present, the research direction is anaerobic product recycling, and two research papers have been published.Shij
摘要platanus orientalis Linn是一种分布广泛的著名行道树，其落叶是丰富的生物质资源。Platanus orientalis Linn (FLPOL)的落叶可以通过厌氧消化产生沼气来资源化处理。本研究旨在评估不同水热预处理(HTP)条件(料液比2-10%，停留时间0.5-2.5 h，温度120-200℃)下FLPOL的厌氧消化(AD)性能。通过能量平衡计算确定的固液比为6%，停留时间为2.0 h，温度为180℃，能量平衡为1.823 kJ/g生物量。在此条件下，工艺水的甲烷产率为56.85 mL/g·VS。Fitzhugh一级动力学模型和修正Gompertz模型的产甲烷势、水解速率、最大产甲烷速率和滞后期分别为101.803 mL/g·VS、0.130 d - 1、14.207 mL/(g·VS·d)和1.332 d。研究结果表明，HTP在促进FLPOL的大规模AD应用方面具有重要作用。关键词:厌氧消化;东方platanus orientalis;落叶;能量平衡;披露声明作者未报告潜在的利益冲突。作者简介龚磊(男)，副教授，硕士生导师，清洁生产审核员，山东省环境影响评价专家库成员，环境与安全教学实验中心主任。主要从事恶臭及有机废气生物处理技术、有机废弃物厌氧消化、微生物燃料电池等方面的研究工作。工作至今主持和参与科研项目20余项，技术改造项目1项;作为主要主编参与制定国家标准1项、行业团体标准1项，发表学术论文20余篇，主编专著1部，参与编辑教材1部;授权专利17项，其中发明专利4项，发明专利转让1项。马晓凡(女)，研究生，就读于青岛科技大学环境与安全工程学院，主要研究方向是利用微生物燃料电池处理甲烷，曾在期刊上发表Sci论文(第一作者)。薛宏斌(男)，山东电途生态环境工程有限公司安全与环境系工作人员郭春倩(男)，研究生，就读于青岛科技大学环境与安全工程学院，目前研究方向为厌氧产品回收利用，已发表研究论文两篇。张士军(男)，1997年生，安全工程专业研究生，目前就读于青岛科技大学环境与安全工程学院，主要研究方向为光催化CO2还原和光催化抗菌剂海洋防污。周军(男)，副教授，硕士生导师，研究方向:地下水污染控制、土壤污染修复技术、固体废物处理处置。主持科研项目20余项，其中作为项目第一负责人承担山东省自然科学基金2项、山东省重点研发项目1项、山东省重点实验室开放基金1项;并接受企事业单位委托的技术研发项目10余项。在国内外学术期刊发表论文30余篇，其中SCI、EI论文10余篇。张浩楠(男)，主要研究方向为基于水热预处理和加速剂的生物质厌氧消化过程及效果研究，发表sci论文4篇。
{"title":"Hydrothermal pretreatment of <i>Platanus orientalis Linn</i> fallen leaves: effects of process conditions on anaerobic digestion","authors":"Lei Gong, Xiaofan Ma, Hongbin Xue, Chunqian Guo, Shijun Zhang, Jun Zhou, Haonan Zhang","doi":"10.1080/02757540.2023.2253239","DOIUrl":"https://doi.org/10.1080/02757540.2023.2253239","url":null,"abstract":"ABSTRACTPlatanus orientalis Linn is widely distributed as a famous street tree, and its fallen leaves are a rich biomass resource. The fallen leaves of Platanus orientalis Linn (FLPOL) can be resourcefully treated by generating biogas through anaerobic digestion. This study aimed to assess the anaerobic digestion (AD) performance of FLPOL under different hydrothermal pretreatment (HTP) conditions (solid–liquid ratio 2–10%, residence times 0.5–2.5 h, and temperatures 120–200°C). The solid–liquid ratio, residence time, and temperature determined by energy balance calculation were 6%, 2.0 h, and 180°C, respectively, and the energy balance was 1.823 kJ/g biomass. Under these conditions, the methane yield of the process water was 56.85 mL/g·VS. The methanogenic potential, hydrolysis rate, maximum methanogenic rate, and the lag period obtained by the Fitzhugh first-order kinetic model and the modified Gompertz model were 101.803 mL/g·VS, 0.130 d−1, 14.207 mL/(g·VS·d) and 1.332 d, respectively. The research results suggest that HTP has an important role in promoting the large-scale AD application of FLPOL.KEYWORDS: Anaerobic digestionPlatanus orientalis Linn fallen leavesenergy balancehydrothermal pretreatmentkinetic simulation AcknowledgmentsThe authors acknowledge Xiaocong Liu and Tong Zuo for their support in the laboratory.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsLei GongLei Gong (male), Associate Professor, Master Supervisor, Cleaner Production Auditor, Member of Shandong Environmental Impact Assessment Expert Database, Director of Environment and Safety Teaching Experiment Center. Mainly engaged in the research work of biological treatment technology of odor and organic waste gas, anaerobic digestion of organic waste, microbial fuel cell and so on. Presided over and participated in more than 20 scientific research projects and 1 technology transformation project since work; participated in the formulation of 1 national standard and 1 industry group standard as the main editor, published more than 20 academic papers, edited 1 monograph, and participated in the editing 1 textbook; 17 authorised patents, including 4 invention patents and 1 invention patent assignment.Xiaofan MaXiaofan Ma (Female), graduate student, studying in Qingdao University of Science and Technology, College of Environment and Safety Engineering, the main research direction is the use of microbial fuel cell treatment of methane, has been published in the journal of the Sci paper (First authors).Hongbin XueHongbin Xue (male), Worked in the Safety and Environment Department of Shandong Diantu Ecological Environment Engineering Co.Chunqian GuoChunqian Guo (male), graduate student, studying in Qingdao University of Science and Technology, College of Environment and Safety Engineering, at present, the research direction is anaerobic product recycling, and two research papers have been published.Shij","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135747304","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 : 2023-07-07DOI: 10.1080/02757540.2023.2231948
Oumaima Abidi, A. Khazri, Hanen Smii, Rihab Belgacem, E. Mahmoudi, H. Beyrem, Mezni Amine, M. Dellali
ABSTRACT The aim of this study was to investigate the deleterious effects of mercuric chloride (HgCl2) on the oxidative status and neurotoxicity of Unio ravoisieri, a freshwater mussel, and the potential protective role of Spirulina (SP) as a dietary supplement. The experiment was conducted in a laboratory setting, with two concentrations of HgCl2 (40 and 80 μg/L) administered either alone or in combination with 20 mg/L of SP over a period of seven days. Samples of the mussel's gills and digestive gland were collected following exposure, and levels of antioxidants (CAT, GST), H2O2, GSH, and damage markers (MDA) were measured, along with the activity of the neurotoxicity enzyme, AChE. The results indicated that exposure to HgCl2 resulted in an increase in lipid peroxidation and antioxidant enzyme levels in both the gills and digestive gland. However, the addition of SP to the diet of the mussels restored the levels of antioxidant enzymes, reduced oxidative stress, and decreased neurotoxicity biomarkers (AChE). These findings suggest that SP at a concentration of 20 mg/L can serve as a natural solution to mitigate the toxicity of HgCl2 in freshwater mussels.
{"title":"The antioxidant properties of Spirulina (microalgae) can reduce oxidative stress and neurotoxicity caused by mercury in freshwater mussels","authors":"Oumaima Abidi, A. Khazri, Hanen Smii, Rihab Belgacem, E. Mahmoudi, H. Beyrem, Mezni Amine, M. Dellali","doi":"10.1080/02757540.2023.2231948","DOIUrl":"https://doi.org/10.1080/02757540.2023.2231948","url":null,"abstract":"ABSTRACT The aim of this study was to investigate the deleterious effects of mercuric chloride (HgCl2) on the oxidative status and neurotoxicity of Unio ravoisieri, a freshwater mussel, and the potential protective role of Spirulina (SP) as a dietary supplement. The experiment was conducted in a laboratory setting, with two concentrations of HgCl2 (40 and 80 μg/L) administered either alone or in combination with 20 mg/L of SP over a period of seven days. Samples of the mussel's gills and digestive gland were collected following exposure, and levels of antioxidants (CAT, GST), H2O2, GSH, and damage markers (MDA) were measured, along with the activity of the neurotoxicity enzyme, AChE. The results indicated that exposure to HgCl2 resulted in an increase in lipid peroxidation and antioxidant enzyme levels in both the gills and digestive gland. However, the addition of SP to the diet of the mussels restored the levels of antioxidant enzymes, reduced oxidative stress, and decreased neurotoxicity biomarkers (AChE). These findings suggest that SP at a concentration of 20 mg/L can serve as a natural solution to mitigate the toxicity of HgCl2 in freshwater mussels.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43903518","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 : 2023-07-03DOI: 10.1080/02757540.2023.2224794
K. Singh, G. Tewari, M. Bisht, R. Tiwary, Suresh Kumar, K. Patni, Aabha Gangwar, Bhawana Kanyal
ABSTRACT In the present investigation, 50 groundwater samples were collected from Udham Singh Nagar District of Kumaun Himalaya in the pre-monsoon season and 15 physicochemical parameters were analysed using standard procedures. Here, we represent the chemistry of major cations and anions to know the overall water quality and hydrogeochemical characteristics controlling the solute acquisition processes and sources of elements in the study area. The analytical results revealed that in the groundwater samples, Ca2+ and Mg2+ were the dominant cations and was the most dominant anion in the study area. In all the groundwater samples, the content of alkaline earth metals (Ca2++ Mg2+) exceeded the mean content of alkalis (Na+ +K+). In 62% of groundwater samples, the value of weak acid ( ) exceeded the content of strong acid (Cl− + ). Piper diagram, molar ratios and statistical techniques indicated that weathering of carbonate and silicate minerals mostly managed the solute acquisition process with very less involvement of human activities. Most of the groundwater samples were found suitable for potable and domestic purposes except for a few locations nearby SIKDKUL or other industries (the eastern and western part of the study area). Correlation analysis revealed the dependency of WQI values on Fe and Mn content.
{"title":"Hydrogeochemical characteristics and multivariate statistical approach for monitoring groundwater quality scenario in the vicinity of industrial area of western Himalaya, India","authors":"K. Singh, G. Tewari, M. Bisht, R. Tiwary, Suresh Kumar, K. Patni, Aabha Gangwar, Bhawana Kanyal","doi":"10.1080/02757540.2023.2224794","DOIUrl":"https://doi.org/10.1080/02757540.2023.2224794","url":null,"abstract":"ABSTRACT In the present investigation, 50 groundwater samples were collected from Udham Singh Nagar District of Kumaun Himalaya in the pre-monsoon season and 15 physicochemical parameters were analysed using standard procedures. Here, we represent the chemistry of major cations and anions to know the overall water quality and hydrogeochemical characteristics controlling the solute acquisition processes and sources of elements in the study area. The analytical results revealed that in the groundwater samples, Ca2+ and Mg2+ were the dominant cations and was the most dominant anion in the study area. In all the groundwater samples, the content of alkaline earth metals (Ca2++ Mg2+) exceeded the mean content of alkalis (Na+ +K+). In 62% of groundwater samples, the value of weak acid ( ) exceeded the content of strong acid (Cl− + ). Piper diagram, molar ratios and statistical techniques indicated that weathering of carbonate and silicate minerals mostly managed the solute acquisition process with very less involvement of human activities. Most of the groundwater samples were found suitable for potable and domestic purposes except for a few locations nearby SIKDKUL or other industries (the eastern and western part of the study area). Correlation analysis revealed the dependency of WQI values on Fe and Mn content.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"39 1","pages":"611 - 639"},"PeriodicalIF":2.5,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47416067","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 : 2023-06-27DOI: 10.1080/02757540.2023.2225496
P. Linnik, V. Osadchyi, N. Osadcha, R. Linnik
ABSTRACT This review summarises literature data on redox potential (Eh) as an essential characteristic of surface waters affecting their ecological and chemical state. We consider the influence of Eh on the migration of nutrients, metals, and metalloids in the ‘bottom sediments – water’ system and its role in the secondary pollution of water bodies. Hypoxia, anaerobic conditions, and reduced Eh leads to an increase in the concentration of nutrients, reduced forms of manganese and iron, due to their migration from bottom sediments to the aquatic environment. This, in turn, contributes to enhanced eutrophication of water bodies. We reviewed the data on the transformation of metal and metalloid compounds depends on the intensity of redox processes resulting their bioavailability, and toxicity to aquatic organisms. Humic substances, as the most common group of dissolved surface water organic substances, exhibit reducing properties and affect the coexisting metals and metalloid species. The intensity of redox processes in surface water will increase under climate change. The issue of redox transformation of elements will need to be considered in the context of developing measures to reduce surface water loading with primarily nutrients and metals, taking into account the possibility of internal pollution of water bodies.
{"title":"Redox potential as an important characteristic of the chemical and biological state of surface waters (review)","authors":"P. Linnik, V. Osadchyi, N. Osadcha, R. Linnik","doi":"10.1080/02757540.2023.2225496","DOIUrl":"https://doi.org/10.1080/02757540.2023.2225496","url":null,"abstract":"ABSTRACT This review summarises literature data on redox potential (Eh) as an essential characteristic of surface waters affecting their ecological and chemical state. We consider the influence of Eh on the migration of nutrients, metals, and metalloids in the ‘bottom sediments – water’ system and its role in the secondary pollution of water bodies. Hypoxia, anaerobic conditions, and reduced Eh leads to an increase in the concentration of nutrients, reduced forms of manganese and iron, due to their migration from bottom sediments to the aquatic environment. This, in turn, contributes to enhanced eutrophication of water bodies. We reviewed the data on the transformation of metal and metalloid compounds depends on the intensity of redox processes resulting their bioavailability, and toxicity to aquatic organisms. Humic substances, as the most common group of dissolved surface water organic substances, exhibit reducing properties and affect the coexisting metals and metalloid species. The intensity of redox processes in surface water will increase under climate change. The issue of redox transformation of elements will need to be considered in the context of developing measures to reduce surface water loading with primarily nutrients and metals, taking into account the possibility of internal pollution of water bodies.","PeriodicalId":9960,"journal":{"name":"Chemistry and Ecology","volume":"39 1","pages":"640 - 672"},"PeriodicalIF":2.5,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48394271","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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