Pub Date : 2023-06-01DOI: 10.1080/26395940.2023.2215944
Shashwati Wankar, Utkarsh Alset, Rutuja Gumathannavar, N. K, N. Kumbhojkar, Atul Kulkarni
ABSTRACT Contamination by hexavalent chromium [Cr (VI)] poses a threat to groundwater quality and its detection at point source is essential to provide early mitigating solutions. In this work, we report the fabrication of paper-based sensing system embedded with a novel nano-chromogenic complex having spherical gold nanoparticles modified with 1,5-diphenylcarbazide dye. This Au-DPC Functionalized paper strip develops pink color in <2 sec upon interaction with Cr (VI). With the developed optical fiber device a limit of detection of 0.02 ppm was achieved within a linear range of 0.01–0.4 ppm. RGB color analysis and data driven predictive modelling (KNN-model) demonstrated highest balanced accuracy score of 0.833 and cross validation accuracy of 0.714. Further, the portable optical fiber-based device offers advantages such as real-time monitoring, remote sensing capabilities, and the ability to integrate with existing optical systems for enhanced detection and analysis.
{"title":"Assessment of nano-functionalized cellulosic paper for selective estimation of Cr (VI) using diffuse reflectance spectroscopy","authors":"Shashwati Wankar, Utkarsh Alset, Rutuja Gumathannavar, N. K, N. Kumbhojkar, Atul Kulkarni","doi":"10.1080/26395940.2023.2215944","DOIUrl":"https://doi.org/10.1080/26395940.2023.2215944","url":null,"abstract":"ABSTRACT Contamination by hexavalent chromium [Cr (VI)] poses a threat to groundwater quality and its detection at point source is essential to provide early mitigating solutions. In this work, we report the fabrication of paper-based sensing system embedded with a novel nano-chromogenic complex having spherical gold nanoparticles modified with 1,5-diphenylcarbazide dye. This Au-DPC Functionalized paper strip develops pink color in <2 sec upon interaction with Cr (VI). With the developed optical fiber device a limit of detection of 0.02 ppm was achieved within a linear range of 0.01–0.4 ppm. RGB color analysis and data driven predictive modelling (KNN-model) demonstrated highest balanced accuracy score of 0.833 and cross validation accuracy of 0.714. Further, the portable optical fiber-based device offers advantages such as real-time monitoring, remote sensing capabilities, and the ability to integrate with existing optical systems for enhanced detection and analysis.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82909989","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 : 2023-05-16DOI: 10.1080/26395940.2023.2209283
L. Sage, Olivia G. Bassetti, E. Johnson, K. Shakya, Nathaniel Weston
ABSTRACT Urban and ex-urban residents have been increasingly utilizing community gardens to supplement their diets, foster relationships with neighbors and learn new skills. Soils in urban-region community gardens, however, can be detrimental to human health if contaminated with metals. In this study, the soils of 20 Philadelphia-region community gardens (and produce from 6 gardens) were analyzed for heavy metal content (As, Cd, Cr, Co, Cu, Ni, Pb) to assess bioavailability, determine relationships with environmental and demographic variables and compare with published safe limits. About 58% of soil samples and 86% of produce samples were above their respective safe lead level. Metal concentrations in garden produce differed between produce types, with the highest concentrations of As, Cr, Co and Cu found in root and leafy vegetables and the lowest concentrations found in fruiting vegetables. Philadelphia-region community gardeners are exposed to unsafe levels of metals both from the soil and from consumed produce.
{"title":"Assessment of heavy metal contamination in soil and produce of Philadelphia community gardens","authors":"L. Sage, Olivia G. Bassetti, E. Johnson, K. Shakya, Nathaniel Weston","doi":"10.1080/26395940.2023.2209283","DOIUrl":"https://doi.org/10.1080/26395940.2023.2209283","url":null,"abstract":"ABSTRACT Urban and ex-urban residents have been increasingly utilizing community gardens to supplement their diets, foster relationships with neighbors and learn new skills. Soils in urban-region community gardens, however, can be detrimental to human health if contaminated with metals. In this study, the soils of 20 Philadelphia-region community gardens (and produce from 6 gardens) were analyzed for heavy metal content (As, Cd, Cr, Co, Cu, Ni, Pb) to assess bioavailability, determine relationships with environmental and demographic variables and compare with published safe limits. About 58% of soil samples and 86% of produce samples were above their respective safe lead level. Metal concentrations in garden produce differed between produce types, with the highest concentrations of As, Cr, Co and Cu found in root and leafy vegetables and the lowest concentrations found in fruiting vegetables. Philadelphia-region community gardeners are exposed to unsafe levels of metals both from the soil and from consumed produce.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89594874","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 Steam disinfection is a trusted method of decontamination and leave no residues, but yet has not been commonly applied for hospitals environment decontamination, hence we aimed to evaluate whether steam mop is an effective device for against pathogens on natural contaminated hospital floors (polyvinyl chloride, PVC) and artificially contaminated (Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii and Candida albicanson) PVC and cloth. The number of microorganisms was significantly reduced after the procedure (p < 0.05) on all hospital floors. Steaming for 15, 10 and 5 seconds could achieve full elimination of all high-, moderate-, and low concentration microorganisms on PVC, respectively, whereas 10, 5 and 10 seconds for cloth. High-, moderate-, and low concentrations microorganism on PVC were completely killed after the first, second and third routine mopping respectively. These results imply that steam mop could be an efficient and environment-friendly alternative for hospitals floors and cloth towels disinfection.
{"title":"Evaluation of the decontamination effectiveness of a steam mop for hospital floors","authors":"Yan Yang, Ling Wang, Chaoying Zeng, Chunmei Li, Jing Hu, Jing Zheng","doi":"10.1080/26395940.2023.2212128","DOIUrl":"https://doi.org/10.1080/26395940.2023.2212128","url":null,"abstract":"ABSTRACT Steam disinfection is a trusted method of decontamination and leave no residues, but yet has not been commonly applied for hospitals environment decontamination, hence we aimed to evaluate whether steam mop is an effective device for against pathogens on natural contaminated hospital floors (polyvinyl chloride, PVC) and artificially contaminated (Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii and Candida albicanson) PVC and cloth. The number of microorganisms was significantly reduced after the procedure (p < 0.05) on all hospital floors. Steaming for 15, 10 and 5 seconds could achieve full elimination of all high-, moderate-, and low concentration microorganisms on PVC, respectively, whereas 10, 5 and 10 seconds for cloth. High-, moderate-, and low concentrations microorganism on PVC were completely killed after the first, second and third routine mopping respectively. These results imply that steam mop could be an efficient and environment-friendly alternative for hospitals floors and cloth towels disinfection.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90081450","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 Heavy metals with a high concentration value in the soil are detrimental to the soil ecosystem. In this study, 96 samples were taken from two soil sections (A-A, B-B) in the mouth of the Juanshui River to analyze heavy metal pollution. Soil pollution status and the ecological risk were investigated using Nemerow and the potential ecological risk index. The sources affecting pollution and pollution distribution characteristics were exhibited based on Inverse Distance Weighted (IDW), principal component analysis (PCA), and Statistics. Pollution in the soil of the mouth of the Juanshui River had reached a moderate level. Hg and Cd were the main potential ecological risk contributions. Coal burning and agricultural chemicals were the predominant pollution source in the study area. In order to avoid the soil of the river mouth becoming a secondary pollution source for water bodies and resulting in a vicious circle of heavy metal pollution, heavy metals in the soil of the river mouth of China should be mainly managed and controlled.
{"title":"Risk assessment and source analysis of heavy metal contamination in the soil of the Juanshui River Mouth","authors":"Siyu Guo, Xinyue Chen, Wei Wei, Tongsheng Li, Feng Yin, Liangchen Xu","doi":"10.1080/26395940.2023.2212127","DOIUrl":"https://doi.org/10.1080/26395940.2023.2212127","url":null,"abstract":"ABSTRACT Heavy metals with a high concentration value in the soil are detrimental to the soil ecosystem. In this study, 96 samples were taken from two soil sections (A-A, B-B) in the mouth of the Juanshui River to analyze heavy metal pollution. Soil pollution status and the ecological risk were investigated using Nemerow and the potential ecological risk index. The sources affecting pollution and pollution distribution characteristics were exhibited based on Inverse Distance Weighted (IDW), principal component analysis (PCA), and Statistics. Pollution in the soil of the mouth of the Juanshui River had reached a moderate level. Hg and Cd were the main potential ecological risk contributions. Coal burning and agricultural chemicals were the predominant pollution source in the study area. In order to avoid the soil of the river mouth becoming a secondary pollution source for water bodies and resulting in a vicious circle of heavy metal pollution, heavy metals in the soil of the river mouth of China should be mainly managed and controlled.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77182214","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 : 2023-04-26DOI: 10.1080/26395940.2023.2205010
J. Ambrožič-Dolinšek, Anja Podgrajšek, Nik Šabeder, Z. M. Grudnik, Andreja Urbanek Krajnc, B. Todorović, Terezija Ciringer
ABSTRACT A potential plant species suitable for As bioaccumulation and phytoremediation of water environments could be the macrophyte Berula erecta. The objective of the present study was to investigate the effect of arsenate (As(V), C2H6AsNaO2∙3 H2O), predominant in freshwater systems, on the growth, development and low molecular weight thiols of Berula erecta under controlled tissue culture conditions in vitro. Uptake of total arsenate increased with increasing arsenate treatments, at a higher percentage in the roots than in the aboveground parts of the plants. Lower concentrations of As(V) (0.1, 1, 10 mg L−1) had a positive effect on growth, dry weight, length of roots and shoots and number of buds. High concentrations of arsenate (50 and 100 mg As(V) L−1) significantly inhibited all growth parameters and decreased the photochemical efficiency of PSII. Evaluation of thiols revealed the critical As level (146 µg g−1 DW; 50 mg As(V) L−1 treatment) above which the As concentration can be toxic.
{"title":"The potential of berula erecta in vitro for As bioaccumulation and phytoremediation of water environments","authors":"J. Ambrožič-Dolinšek, Anja Podgrajšek, Nik Šabeder, Z. M. Grudnik, Andreja Urbanek Krajnc, B. Todorović, Terezija Ciringer","doi":"10.1080/26395940.2023.2205010","DOIUrl":"https://doi.org/10.1080/26395940.2023.2205010","url":null,"abstract":"ABSTRACT A potential plant species suitable for As bioaccumulation and phytoremediation of water environments could be the macrophyte Berula erecta. The objective of the present study was to investigate the effect of arsenate (As(V), C2H6AsNaO2∙3 H2O), predominant in freshwater systems, on the growth, development and low molecular weight thiols of Berula erecta under controlled tissue culture conditions in vitro. Uptake of total arsenate increased with increasing arsenate treatments, at a higher percentage in the roots than in the aboveground parts of the plants. Lower concentrations of As(V) (0.1, 1, 10 mg L−1) had a positive effect on growth, dry weight, length of roots and shoots and number of buds. High concentrations of arsenate (50 and 100 mg As(V) L−1) significantly inhibited all growth parameters and decreased the photochemical efficiency of PSII. Evaluation of thiols revealed the critical As level (146 µg g−1 DW; 50 mg As(V) L−1 treatment) above which the As concentration can be toxic.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74936459","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 : 2023-04-26DOI: 10.1080/26395940.2023.2203350
Jing Wu, Yunwen Wang, Xuexin Gong, Mei He, Xiaoli Wang, R. Zhao, Zhineng Hao, Jingfu Liu
ABSTRACT Halogenated organic compounds (HOCs) are prevalent in environmental waters, but current analytical techniques are unable to identify and quantify all individual HOCs. To enhance the understanding of unregulated and unknown HOCs, total organic halogen (TOX) is proposed as a total quantity index for the overall content of HOCs in waters, and has achieved significant progresses. This paper presents a review of TOX analysis from perspectives of detection and pretreatment methods, including the measurement of halide ion (IX) or TOX content by several instruments; separation methods with enrichment based on activated carbon-adsorption, solid-phase extraction, and liquid-liquid extraction, as well as without enrichment based on the subtraction method and IX removal. The relevant fundamentals, operational processes, and key influencing factors are especially concerned. This review should be useful in understanding TOX analysis and the risk of HOCs in waters, and calls for developing more efficient TOX measurement approaches in the future. GRAPHICAL ABSTRACT
{"title":"Total organic halogen (TOX) analysis in waters: A short review","authors":"Jing Wu, Yunwen Wang, Xuexin Gong, Mei He, Xiaoli Wang, R. Zhao, Zhineng Hao, Jingfu Liu","doi":"10.1080/26395940.2023.2203350","DOIUrl":"https://doi.org/10.1080/26395940.2023.2203350","url":null,"abstract":"ABSTRACT Halogenated organic compounds (HOCs) are prevalent in environmental waters, but current analytical techniques are unable to identify and quantify all individual HOCs. To enhance the understanding of unregulated and unknown HOCs, total organic halogen (TOX) is proposed as a total quantity index for the overall content of HOCs in waters, and has achieved significant progresses. This paper presents a review of TOX analysis from perspectives of detection and pretreatment methods, including the measurement of halide ion (IX) or TOX content by several instruments; separation methods with enrichment based on activated carbon-adsorption, solid-phase extraction, and liquid-liquid extraction, as well as without enrichment based on the subtraction method and IX removal. The relevant fundamentals, operational processes, and key influencing factors are especially concerned. This review should be useful in understanding TOX analysis and the risk of HOCs in waters, and calls for developing more efficient TOX measurement approaches in the future. GRAPHICAL ABSTRACT","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78978936","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 Effective passivation of heavy metals in sludge is the key to achieve its land use. Potassium feldspar was modified to obtain G×K900, with a lower crystallinity, a higher specific surface area and cationic exchange capacity. G×K900 was chosen to passivate heavy metals in the sludge, and the best passivation conditions were 30% addition and a 10-day passivation period. The passivated sludge extract had no adverse effects on ryegrass germination and promoted radicle growth. The pot experiment revealed that adding 10% passivated sludge encouraged ryegrass growth while having no appreciable impact on the contents of Cu, Cr, Zn and Pb in the roots and above-ground parts compared to control treatment. The transfer factors of the four metals were all less than 1. Passivated sludge was used as a growing medium for landscaping plants, which provided a theoretical foundation for sludge land use and a resource outlet for potassium feldspar minerals.
{"title":"Phytotoxicity of sewage sludge passivated by modified potassium feldspar and its effect on ryegrass growth","authors":"Tianyu Xie, Feng Li, Heng Cao, Chenglong Ge, Wenhao Zhao, Ying Zhao, Xuan Zhang","doi":"10.1080/26395940.2023.2205011","DOIUrl":"https://doi.org/10.1080/26395940.2023.2205011","url":null,"abstract":"ABSTRACT Effective passivation of heavy metals in sludge is the key to achieve its land use. Potassium feldspar was modified to obtain G×K900, with a lower crystallinity, a higher specific surface area and cationic exchange capacity. G×K900 was chosen to passivate heavy metals in the sludge, and the best passivation conditions were 30% addition and a 10-day passivation period. The passivated sludge extract had no adverse effects on ryegrass germination and promoted radicle growth. The pot experiment revealed that adding 10% passivated sludge encouraged ryegrass growth while having no appreciable impact on the contents of Cu, Cr, Zn and Pb in the roots and above-ground parts compared to control treatment. The transfer factors of the four metals were all less than 1. Passivated sludge was used as a growing medium for landscaping plants, which provided a theoretical foundation for sludge land use and a resource outlet for potassium feldspar minerals.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78138593","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 : 2023-04-25DOI: 10.1080/26395940.2023.2203349
Wei-wei Gao, Xue-Jiao Deng, Jun Zhang, Lin Qi, Xiu-Qing Zhao, P. Zhang
ABSTRACT Microplastics usually refer to solid plastic particles with particle size less than 5 mm. As a new type of pollutant unavoidable produced during human production and living activities, microplastics affect the ecological environment and human health safety. Since microplastics are widely distributed, small-sized microplastics and microfibers may be introduced from ambient air, sampling equipment and laboratory equipment during various monitoring process. Strict quality control measures were required to ensure the accuracy of monitoring results. In order to evaluate the compliance of quality control measures adopted in current researches, eight quality control parameters were statistically summarized by reviewing 30 published researches involving microplastic quality control methods. The results showed that those eight quality control measures could not be fully covered in most studies and uniform standardization of some key quality control measures have not been achieved. It was suggested to develop standardized operational protocols and perform cross-calibration among laboratories. GRAPHICAL ABSTRACT
{"title":"Assessment of quality control measures in the monitoring of microplastic: a critical review","authors":"Wei-wei Gao, Xue-Jiao Deng, Jun Zhang, Lin Qi, Xiu-Qing Zhao, P. Zhang","doi":"10.1080/26395940.2023.2203349","DOIUrl":"https://doi.org/10.1080/26395940.2023.2203349","url":null,"abstract":"ABSTRACT Microplastics usually refer to solid plastic particles with particle size less than 5 mm. As a new type of pollutant unavoidable produced during human production and living activities, microplastics affect the ecological environment and human health safety. Since microplastics are widely distributed, small-sized microplastics and microfibers may be introduced from ambient air, sampling equipment and laboratory equipment during various monitoring process. Strict quality control measures were required to ensure the accuracy of monitoring results. In order to evaluate the compliance of quality control measures adopted in current researches, eight quality control parameters were statistically summarized by reviewing 30 published researches involving microplastic quality control methods. The results showed that those eight quality control measures could not be fully covered in most studies and uniform standardization of some key quality control measures have not been achieved. It was suggested to develop standardized operational protocols and perform cross-calibration among laboratories. GRAPHICAL ABSTRACT","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74337838","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 : 2023-04-17DOI: 10.1080/26395940.2023.2197154
Munira Abdullah Rashed Alqahtani, P. Virk, D. Fouad
ABSTRACT Di(2-ethylhexyl) phthalate (DEHP) is an extensively used plasticizer and being non-covalently bound to plastics it leaches out into the environment. This addresses a grave concern on its potential human exposure and subsequent deleterious effects. The ameliorative potential of Spirulina (Arthrospira platensis) against DEHP-induced toxicity was assessed in rats. Group I was control. Group II and III, were exposed to a low dose of DEHP (125 mg/kg), and Group IV and V were exposed to a high dose of DEHP (250 mg/kg). Group III and V were treated with spirulina orally (1000 mg/Kg) for 3 weeks. Exposure to DEHP elicited marked oxidative stress and associated DNA damage in a dose-dependent manner. The hepatic expression of p53 was also significantly suppressed. Liver and kidney function tests showed marked alterations. Treatment with spirulina efficaciously reversed the adverse effects. Thus, these findings offer a nutritional intervention of spirulina to combat the environmental exposure to plasticizers. GRAPHICAL ABSTRACT
{"title":"Attenuating Effect of Spirulina (Arthrospira platensis) against Di (2-ethylhexyl) Phthalate Induced Toxicity in Wistar Rat","authors":"Munira Abdullah Rashed Alqahtani, P. Virk, D. Fouad","doi":"10.1080/26395940.2023.2197154","DOIUrl":"https://doi.org/10.1080/26395940.2023.2197154","url":null,"abstract":"ABSTRACT Di(2-ethylhexyl) phthalate (DEHP) is an extensively used plasticizer and being non-covalently bound to plastics it leaches out into the environment. This addresses a grave concern on its potential human exposure and subsequent deleterious effects. The ameliorative potential of Spirulina (Arthrospira platensis) against DEHP-induced toxicity was assessed in rats. Group I was control. Group II and III, were exposed to a low dose of DEHP (125 mg/kg), and Group IV and V were exposed to a high dose of DEHP (250 mg/kg). Group III and V were treated with spirulina orally (1000 mg/Kg) for 3 weeks. Exposure to DEHP elicited marked oxidative stress and associated DNA damage in a dose-dependent manner. The hepatic expression of p53 was also significantly suppressed. Liver and kidney function tests showed marked alterations. Treatment with spirulina efficaciously reversed the adverse effects. Thus, these findings offer a nutritional intervention of spirulina to combat the environmental exposure to plasticizers. GRAPHICAL ABSTRACT","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89228227","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 : 2023-03-15DOI: 10.1080/26395940.2023.2190489
Peng Xiao, Yuanzhe Li
ABSTRACT Airborne exposure to silica, below statutory industrial standards, can cause silica exposure and poisoning in construction workers at higher rates than predicted. This research aimed to assess the respiratory health of construction workers exposed to silica from tiles, bricks, mortar, and concrete. The study found a positive correlation between construction material dust and fume exposures and workplace seniority. Silica poisoning was dose-dependent on cumulative silica dust or fumes exposure. The average industrial silica particles and emissions BMDLs were 0.68 and 0.30 mg year/m3, respectively. Silica dust and fume BMDLs for silica poisoning were 0.02 mg/m3 and 0.01 mg/m3, respectively. The study concluded that the current exposure levels for silica in China should be re-evaluated, and operational cumulative exposure limits should be established for better prevention of silica poisoning. The study also noted that disparities in sensitivity to silica poisoning may be related to genetic factors and gene-environment interactions.
{"title":"Dose response assessment of silica exposure and poisoning of construction workers","authors":"Peng Xiao, Yuanzhe Li","doi":"10.1080/26395940.2023.2190489","DOIUrl":"https://doi.org/10.1080/26395940.2023.2190489","url":null,"abstract":"ABSTRACT Airborne exposure to silica, below statutory industrial standards, can cause silica exposure and poisoning in construction workers at higher rates than predicted. This research aimed to assess the respiratory health of construction workers exposed to silica from tiles, bricks, mortar, and concrete. The study found a positive correlation between construction material dust and fume exposures and workplace seniority. Silica poisoning was dose-dependent on cumulative silica dust or fumes exposure. The average industrial silica particles and emissions BMDLs were 0.68 and 0.30 mg year/m3, respectively. Silica dust and fume BMDLs for silica poisoning were 0.02 mg/m3 and 0.01 mg/m3, respectively. The study concluded that the current exposure levels for silica in China should be re-evaluated, and operational cumulative exposure limits should be established for better prevention of silica poisoning. The study also noted that disparities in sensitivity to silica poisoning may be related to genetic factors and gene-environment interactions.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90462209","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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