Emerging Contaminants最新文献_第3页

Legacy and emerging organic pollutants in indoor and outdoor environments in Africa: Contamination levels, health risks, and analytical techniques

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-02 DOI: 10.1016/j.emcon.2025.100468

Godfrey Muhwezi , Christine Kyarimpa , Ivan Gumula , Christine Betty Nagawa , Solomon Omwoma , Henry Matovu , Julius Matsiko , Silver Odongo , Douglas Sifuna , Ivan Špánik , Charles Drago Kato , Patrick Ssebugere

The World Health Organisation reported that over 20 % of the global disease burden and deaths are caused by environmental factors such as air and dust pollution. Legacy organic pollutants (LOPs) and emerging organic pollutants (EOPs) are among the biggest contributors to this burden. Herein we reviewed literature published for the period 2000–2023 on selected LOPs and EOPs in indoor dust and outdoor air in Africa to understand the occurrence, associated human health risks and common analytical techniques used to identify and quantify these contaminants. The findings revealed generally lower contamination levels for most pollutants than that in most regions outside Africa except for PCBs in outdoor air and OCPs in indoor settled dust. Apart from a few studies for polychlorinated biphenyls (PCBs), most studies reported hazard index (HI) values less than 1 for outdoor air and indoor dust exposure, which suggested negligible non-carcinogenic risks in children and adults. Gas Chromatography and mass spectrometry were the most frequently used analytical techniques for both air and dust probably due to their sensitivity and selectivity in detecting chemical traces at the pg m⁻³ and ng g⁻¹ levels. Although the current contamination levels are generally low, their synergistic and cumulative effects may in the long run affect the environment and human health. There is also a paucity of data on most contaminants, especially for PCNs, and PFASs in both outdoor air and dust. Coordinated efforts are needed to limit the trade, importation, and disposal of products containing LOPs and EOPs in Africa.

{"title":"Legacy and emerging organic pollutants in indoor and outdoor environments in Africa: Contamination levels, health risks, and analytical techniques","authors":"Godfrey Muhwezi , Christine Kyarimpa , Ivan Gumula , Christine Betty Nagawa , Solomon Omwoma , Henry Matovu , Julius Matsiko , Silver Odongo , Douglas Sifuna , Ivan Špánik , Charles Drago Kato , Patrick Ssebugere","doi":"10.1016/j.emcon.2025.100468","DOIUrl":"10.1016/j.emcon.2025.100468","url":null,"abstract":"<div><div>The World Health Organisation reported that over 20 % of the global disease burden and deaths are caused by environmental factors such as air and dust pollution. Legacy organic pollutants (LOPs) and emerging organic pollutants (EOPs) are among the biggest contributors to this burden. Herein we reviewed literature published for the period 2000–2023 on selected LOPs and EOPs in indoor dust and outdoor air in Africa to understand the occurrence, associated human health risks and common analytical techniques used to identify and quantify these contaminants. The findings revealed generally lower contamination levels for most pollutants than that in most regions outside Africa except for PCBs in outdoor air and OCPs in indoor settled dust. Apart from a few studies for polychlorinated biphenyls (PCBs), most studies reported hazard index (HI) values less than 1 for outdoor air and indoor dust exposure, which suggested negligible non-carcinogenic risks in children and adults. Gas Chromatography and mass spectrometry were the most frequently used analytical techniques for both air and dust probably due to their sensitivity and selectivity in detecting chemical traces at the pg m<sup>−3</sup> and ng g<sup>−1</sup> levels. Although the current contamination levels are generally low, their synergistic and cumulative effects may in the long run affect the environment and human health. There is also a paucity of data on most contaminants, especially for PCNs, and PFASs in both outdoor air and dust. Coordinated efforts are needed to limit the trade, importation, and disposal of products containing LOPs and EOPs in Africa.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100468"},"PeriodicalIF":5.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrences, spatial distributions, and ecological risks of organic ultraviolet absorbents in surface sediments from Taihu Lake, China

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-02 DOI: 10.1016/j.emcon.2024.100466

Wen Gu , Shuai Sun , Yinying Cai , Ziyan Du , Xiaohan Shan , Mengyuan Liang , Min Guo , Linjun Zhou , Yong Zhang

The occurrences and spatial distributions of eight organic ultraviolet absorbents (UVAs) were investigated in surface sediments from Taihu Lake, China. The detection frequencies and concentrations of UVAs in 2016 were significantly higher than those in 2015.2-Ethylhexyl methoxycinnamate and homosalate (HMS) were the predominant UVAs in the sediment samples. The total UVA concentration range in sediment samples was 0.15–85.3 ng/g. The spatial distribution results showed that UVAs were concentrated in the northwest of Taihu Lake. The total organic carbon content may affect the fate of UVAs in sediments. Source analysis and correlation analysis showed that the following compounds had high proportions and significant correlations: 2-ethylhexyl methoxycinnamate, ethylhexyl salicylate, and HMS in 2015; and benzophenone-3, HMS, and benzyl salicylate in 2016. These results indicated the correlated compounds within each year had the same source. Ecological risk assessment results showed that UVAs in sediment from Taihu Lake may present a moderate risk to benthic organisms. The risk quotient of UVAs in 2016 was slightly higher than that in 2015. The seasonal pollution characteristics of UVAs and their comprehensive environmental risks should receive further attention.

{"title":"Occurrences, spatial distributions, and ecological risks of organic ultraviolet absorbents in surface sediments from Taihu Lake, China","authors":"Wen Gu , Shuai Sun , Yinying Cai , Ziyan Du , Xiaohan Shan , Mengyuan Liang , Min Guo , Linjun Zhou , Yong Zhang","doi":"10.1016/j.emcon.2024.100466","DOIUrl":"10.1016/j.emcon.2024.100466","url":null,"abstract":"<div><div>The occurrences and spatial distributions of eight organic ultraviolet absorbents (UVAs) were investigated in surface sediments from Taihu Lake, China. The detection frequencies and concentrations of UVAs in 2016 were significantly higher than those in 2015.2-Ethylhexyl methoxycinnamate and homosalate (HMS) were the predominant UVAs in the sediment samples. The total UVA concentration range in sediment samples was 0.15–85.3 ng/g. The spatial distribution results showed that UVAs were concentrated in the northwest of Taihu Lake. The total organic carbon content may affect the fate of UVAs in sediments. Source analysis and correlation analysis showed that the following compounds had high proportions and significant correlations: 2-ethylhexyl methoxycinnamate, ethylhexyl salicylate, and HMS in 2015; and benzophenone-3, HMS, and benzyl salicylate in 2016. These results indicated the correlated compounds within each year had the same source. Ecological risk assessment results showed that UVAs in sediment from Taihu Lake may present a moderate risk to benthic organisms. The risk quotient of UVAs in 2016 was slightly higher than that in 2015. The seasonal pollution characteristics of UVAs and their comprehensive environmental risks should receive further attention.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100466"},"PeriodicalIF":5.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrence, spatial distribution, source apportionment, and risk assessment of antibiotics in Yangtze river surface water

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100437

Deling Fan , Yan Zhang , Shuai Sun , Bing Zhang , Mengyuan Liang , Jian Xu , Lei Wang

The identification and source tracing of antibiotic contaminants in rivers has become a research hotspot. In this study, surface water samples were collected from 67 locations in the Yangtze River Basin, China. The detection rate, concentration, and distribution characteristics of various antibiotics in these water samples were analyzed. Based on these data, the sources of these antibiotics were traced and correlated with factors such as urban population size, industrial activity, and wastewater treatment efficiency within the sampling area. A total of 57 antibiotics were detected in the Yangtze River, with detection rates of roxithromycin, 1,7-dimethylxanthine (1,7-DTX), and florfenicol (FF) exceeding 80 %. The average total concentration of antibiotics was significantly higher in upstream regions (525.4 ng/L) compared with middle regions (89.5 ng/L) and downstream regions (246.6 ng/L). Furthermore, antibiotic concentrations positively correlated with population density and economic development (R = 0.857, p < 0.05). Based on ecological risk assessment and priority indexes, enoxacin, roxithromycin, sarafloxacin, and clarithromycin (CLR) posed medium risks. This research provides scientific guidance for the periodic monitoring and regulation of antibiotic contaminants in river ecosystems.

{"title":"Occurrence, spatial distribution, source apportionment, and risk assessment of antibiotics in Yangtze river surface water","authors":"Deling Fan , Yan Zhang , Shuai Sun , Bing Zhang , Mengyuan Liang , Jian Xu , Lei Wang","doi":"10.1016/j.emcon.2024.100437","DOIUrl":"10.1016/j.emcon.2024.100437","url":null,"abstract":"<div><div>The identification and source tracing of antibiotic contaminants in rivers has become a research hotspot. In this study, surface water samples were collected from 67 locations in the Yangtze River Basin, China. The detection rate, concentration, and distribution characteristics of various antibiotics in these water samples were analyzed. Based on these data, the sources of these antibiotics were traced and correlated with factors such as urban population size, industrial activity, and wastewater treatment efficiency within the sampling area. A total of 57 antibiotics were detected in the Yangtze River, with detection rates of roxithromycin, 1,7-dimethylxanthine (1,7-DTX), and florfenicol (FF) exceeding 80 %. The average total concentration of antibiotics was significantly higher in upstream regions (525.4 ng/L) compared with middle regions (89.5 ng/L) and downstream regions (246.6 ng/L). Furthermore, antibiotic concentrations positively correlated with population density and economic development (R = 0.857, p < 0.05). Based on ecological risk assessment and priority indexes, enoxacin, roxithromycin, sarafloxacin, and clarithromycin (CLR) posed medium risks. This research provides scientific guidance for the periodic monitoring and regulation of antibiotic contaminants in river ecosystems.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100437"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rare earth elements on aquatic organisms: Toxicity, detoxification, and ecological implications

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100457

Mahdi Banaee , Camilla Mossotto , Alessandra Maganza , Reza Azizi , Marino Prearo , Paolo Pastorino , Caterina Faggio

Rare earth elements (REEs) are widely used in various industries, such as electronics, renewable energy, and manufacturing, leading to their gradual accumulation in ecosystems, including water environments. As emerging pollutants, REEs find their way into water bodies through various channels, such as industrial discharge, mining runoff, and sewage. Despite their growing presence, the understanding of their toxicity in aquatic organisms is limited, representing a significant gap in current research. This review studies the bioaccumulation and toxicity of REEs in aquatic organisms, highlighting factors such as water chemistry, speciation, and organism characteristics that influence their uptake and effects. REEs can induce oxidative stress, ion imbalance, enzyme inhibition, and reproductive toxicity in aquatic species, leading to potential impairments in growth, survival, and reproduction. The ecological consequences of REE contamination extend beyond individual species and potentially affect community structures, disrupt food webs, and alter ecosystem functioning. This review emphasizes the urgent need for international regulatory guidelines to manage REE pollution in aquatic environments to protect biodiversity and ecosystem health.

{"title":"Rare earth elements on aquatic organisms: Toxicity, detoxification, and ecological implications","authors":"Mahdi Banaee , Camilla Mossotto , Alessandra Maganza , Reza Azizi , Marino Prearo , Paolo Pastorino , Caterina Faggio","doi":"10.1016/j.emcon.2024.100457","DOIUrl":"10.1016/j.emcon.2024.100457","url":null,"abstract":"<div><div>Rare earth elements (REEs) are widely used in various industries, such as electronics, renewable energy, and manufacturing, leading to their gradual accumulation in ecosystems, including water environments. As emerging pollutants, REEs find their way into water bodies through various channels, such as industrial discharge, mining runoff, and sewage. Despite their growing presence, the understanding of their toxicity in aquatic organisms is limited, representing a significant gap in current research. This review studies the bioaccumulation and toxicity of REEs in aquatic organisms, highlighting factors such as water chemistry, speciation, and organism characteristics that influence their uptake and effects. REEs can induce oxidative stress, ion imbalance, enzyme inhibition, and reproductive toxicity in aquatic species, leading to potential impairments in growth, survival, and reproduction. The ecological consequences of REE contamination extend beyond individual species and potentially affect community structures, disrupt food webs, and alter ecosystem functioning. This review emphasizes the urgent need for international regulatory guidelines to manage REE pollution in aquatic environments to protect biodiversity and ecosystem health.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100457"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Endocrine-disrupting compounds in urban rivers of the southern border of Mexico: Occurrence and ecological risk assessment

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100456

Khirbet López-Velázquez , José G. Ronderos-Lara , Hugo A. Saldarriaga-Noreña , Mario A. Murillo-Tovar , Minerva Villanueva-Rodríguez , Jorge L. Guzmán-Mar , Edwin R. Hoil-Canul , José L. Cabellos-Quiroz

The occurrence of seven endocrine-disrupting compounds (EDCs) in four urban rivers on the southern border of Mexico was studied in this work. The selected EDCs were 17β-estradiol (E2), estriol (E3), 17α-ethinylestradiol (EE2), bisphenol A (BPA), bisphenol F (BPF), 4-nonylphenol (4NP) and 4-tert-octylphenol (4TOP). Water samples from the Coatan, Texcuyuapan, Cahoacan, and Coatancito rivers were collected at three different sites on each river and processed by solid phase extraction (SPE). The samples were analyzed by gas chromatography triple quadrupole tandem mass spectrometry (GC-MS/MS) and compounds of interest were identified by dynamic mass reaction monitoring mode (dMRM). Among the target EDCs, E2, BPA, and 4NP were detected in all water samples, with BPA being the most abundant ranging from 4.22 up to 127.96 ng/L. Correlation tests showed significant positive associations between estrogens and BPA, as well as the correlation between alkylphenols and BPA, suggesting common origin emission sources, which were identified as discharges of untreated municipal wastewater. Finally, the estimation of RQ and EEQ values indicated that the presence of E2, E3, EE2, and BPA in all sampled points represents a high risk for aquatic life in these sites, mainly for Texcuyuapan River, where the aquatic organisms may be susceptible to endocrine disruption by chronic exposure to detected compounds.

{"title":"Endocrine-disrupting compounds in urban rivers of the southern border of Mexico: Occurrence and ecological risk assessment","authors":"Khirbet López-Velázquez , José G. Ronderos-Lara , Hugo A. Saldarriaga-Noreña , Mario A. Murillo-Tovar , Minerva Villanueva-Rodríguez , Jorge L. Guzmán-Mar , Edwin R. Hoil-Canul , José L. Cabellos-Quiroz","doi":"10.1016/j.emcon.2024.100456","DOIUrl":"10.1016/j.emcon.2024.100456","url":null,"abstract":"<div><div>The occurrence of seven endocrine-disrupting compounds (EDCs) in four urban rivers on the southern border of Mexico was studied in this work. The selected EDCs were 17β-estradiol (E2), estriol (E3), 17α-ethinylestradiol (EE2), bisphenol A (BPA), bisphenol F (BPF), 4-nonylphenol (4NP) and 4-tert-octylphenol (4TOP). Water samples from the Coatan, Texcuyuapan, Cahoacan, and Coatancito rivers were collected at three different sites on each river and processed by solid phase extraction (SPE). The samples were analyzed by gas chromatography triple quadrupole tandem mass spectrometry (GC-MS/MS) and compounds of interest were identified by dynamic mass reaction monitoring mode (dMRM). Among the target EDCs, E2, BPA, and 4NP were detected in all water samples, with BPA being the most abundant ranging from 4.22 up to 127.96 ng/L. Correlation tests showed significant positive associations between estrogens and BPA, as well as the correlation between alkylphenols and BPA, suggesting common origin emission sources, which were identified as discharges of untreated municipal wastewater. Finally, the estimation of RQ and EEQ values indicated that the presence of E2, E3, EE2, and BPA in all sampled points represents a high risk for aquatic life in these sites, mainly for Texcuyuapan River, where the aquatic organisms may be susceptible to endocrine disruption by chronic exposure to detected compounds.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100456"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bakelite to microplastics contamination: A comprehensive review on microplastics sources, distribution and their characteristic existence in environment

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100454

Ashwin KRN , Srimuruganandam B

Polymers used as a commodity are prevalent as plastic products in day-to-day life globally. Mass production and mishandling of plastic waste turns out to produce contaminants in micro and nano size ranges. The life span of microplastics (MPs) constitutes a larger threat due to its existence in all spheres of earth. Their footprint and lifetime in environmental conditions is galactic, thus it is necessary to conduct a literature study and review on substantial sources, their distribution mechanisms and transformation process. MPs are formed under natural conditions by physical, chemical and biological forces. In this context, a comprehensive review on origin, deterioration, dispersion, sorption, motility, and settlement of MPs across ecosystems is evaluated. Major findings of review showed MPs have emerged in daily human food intake of about 0–1674 numbers/kg in salts and 52 particles/fish respectively. This review identifies that environmental concentration of MPs increases rapidly with one or more sources identified every year. This review enhances understanding of widespread distribution of MPs and potential health threats to human due to their abundance and size. Further, the number of research on plastic alternative products and additives for mitigating plastic pollution is less. Thus, this review also emphasizes the key aspects of focus to conduct research towards evidence based human health studies of MPs and developing effective strategies in mitigating plastics.

{"title":"Bakelite to microplastics contamination: A comprehensive review on microplastics sources, distribution and their characteristic existence in environment","authors":"Ashwin KRN , Srimuruganandam B","doi":"10.1016/j.emcon.2024.100454","DOIUrl":"10.1016/j.emcon.2024.100454","url":null,"abstract":"<div><div>Polymers used as a commodity are prevalent as plastic products in day-to-day life globally. Mass production and mishandling of plastic waste turns out to produce contaminants in micro and nano size ranges. The life span of microplastics (MPs) constitutes a larger threat due to its existence in all spheres of earth. Their footprint and lifetime in environmental conditions is galactic, thus it is necessary to conduct a literature study and review on substantial sources, their distribution mechanisms and transformation process. MPs are formed under natural conditions by physical, chemical and biological forces. In this context, a comprehensive review on origin, deterioration, dispersion, sorption, motility, and settlement of MPs across ecosystems is evaluated. Major findings of review showed MPs have emerged in daily human food intake of about 0–1674 numbers/kg in salts and 52 particles/fish respectively. This review identifies that environmental concentration of MPs increases rapidly with one or more sources identified every year. This review enhances understanding of widespread distribution of MPs and potential health threats to human due to their abundance and size. Further, the number of research on plastic alternative products and additives for mitigating plastic pollution is less. Thus, this review also emphasizes the key aspects of focus to conduct research towards evidence based human health studies of MPs and developing effective strategies in mitigating plastics.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100454"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Airborne microplastics pollution in municipal solid waste processing and disposal complex: Concentration, characterization, and composition

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100459

Adel Mokammel , Kazem Naddafi , Mohammad Sadegh Hassanvand , Ramin Nabizadeh , Sasan Faridi , Elahe Noruzzade , Kamyar Yaghmaeian

Processing and disposal facilities of municipal solid waste play a significant role in emitting pollutants. We designed this study to investigate one of the emerging environmental pollutants, airborne microplastics (MPs), in the air samples collected from various locations (pre-processing hall, office building, windrow composting area, compost refinery plant, landfill sites, incineration plant, and background) of the largest municipal solid waste processing and disposal complex (MSWPDC) in Iran. We employed a qualitative and quantitative approach using a stereo microscope and micro Raman spectroscopy to analyze the airborne MPs feature. Airborne MPs concentration ranged from 1.7 to 24.7 N/m³ with an average (± standard deviation (of 6.54 ± 5.08 N/m³. The highest concentrations were found in the windrow composting area, with an average concentration of 12.4 ± 9.32 N/m³. Given morphologies, fibers exhibited the highest proportion, making up approximately 64 % of the total. All airborne MPs had a size range between 5 and 2984 μm, mainly in the range of 100–500 μm. Regarding composition and color, PET/Polyester and transparent were the dominant, accounting for 26 % and 32 % of the total, respectively. Our findings showed a high concentration of MPs in the air of the Aradkooh MSWPDC. The findings underscore the importance of implementing stronger measures to reduce MPs emissions, as AMSWPDC could be a potential source of MPs pollution in the surrounding areas.

{"title":"Airborne microplastics pollution in municipal solid waste processing and disposal complex: Concentration, characterization, and composition","authors":"Adel Mokammel , Kazem Naddafi , Mohammad Sadegh Hassanvand , Ramin Nabizadeh , Sasan Faridi , Elahe Noruzzade , Kamyar Yaghmaeian","doi":"10.1016/j.emcon.2024.100459","DOIUrl":"10.1016/j.emcon.2024.100459","url":null,"abstract":"<div><div>Processing and disposal facilities of municipal solid waste play a significant role in emitting pollutants. We designed this study to investigate one of the emerging environmental pollutants, airborne microplastics (MPs), in the air samples collected from various locations (pre-processing hall, office building, windrow composting area, compost refinery plant, landfill sites, incineration plant, and background) of the largest municipal solid waste processing and disposal complex (MSWPDC) in Iran. We employed a qualitative and quantitative approach using a stereo microscope and micro Raman spectroscopy to analyze the airborne MPs feature. Airborne MPs concentration ranged from 1.7 to 24.7 N/m<sup>3</sup> with an average (± standard deviation (of 6.54 ± 5.08 N/m<sup>3</sup>. The highest concentrations were found in the windrow composting area, with an average concentration of 12.4 ± 9.32 N/m<sup>3</sup>. Given morphologies, fibers exhibited the highest proportion, making up approximately 64 % of the total. All airborne MPs had a size range between 5 and 2984 μm, mainly in the range of 100–500 μm. Regarding composition and color, PET/Polyester and transparent were the dominant, accounting for 26 % and 32 % of the total, respectively. Our findings showed a high concentration of MPs in the air of the Aradkooh MSWPDC. The findings underscore the importance of implementing stronger measures to reduce MPs emissions, as AMSWPDC could be a potential source of MPs pollution in the surrounding areas.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100459"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sources, dissemination, and risk assessment of antibiotic resistance in surface waters: A review

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100455

Na Liu, Lingsong Zhang, Hao Xue, Zhilin Yang, Fansheng Meng

The development and spread of antibiotic resistance (AR) have become major concerns because they pose pressing public health problems worldwide, and aquatic ecosystems are recognized reservoirs for antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB). We reviewed the sources, distribution, and factors influencing ARGs and ARB in surface waters, and the methods used to measure and assess the risks posed to human and ecological health. The prevalence of ARGs and ARB is largely attributed to environmental contamination from fecal matter. Therefore, the distribution of AR on both regional and seasonal scales is significantly impacted by agriculture, which is related to economic development. In risk assessments, the risk of ARGs is mainly evaluated based on their mobility, pathogen carriage, and regional distribution, while the risk assessment for ARB is primarily focused on the quantities and diversities of pathogen-associated resistant bacteria. Based on this information, we suggest seven priority research questions regarding antibiotic resistance management in water environments: control of AR dissemination, advanced monitoring technologies, integrative impacts evaluation of antibiotics on resistance mechanisms and microbial communities, quantitative microbial risk assessment for ARB and ARGs, implications of horizontal gene transfer in non-pathogenic bacteria, synergistic risks of multiple resistance elements, and identification of high-risk ARGs and ARB in aquatic ecosystems. We also advocate for the implementation of national actions that focus on source management and environmental monitoring.

{"title":"Sources, dissemination, and risk assessment of antibiotic resistance in surface waters: A review","authors":"Na Liu, Lingsong Zhang, Hao Xue, Zhilin Yang, Fansheng Meng","doi":"10.1016/j.emcon.2024.100455","DOIUrl":"10.1016/j.emcon.2024.100455","url":null,"abstract":"<div><div>The development and spread of antibiotic resistance (AR) have become major concerns because they pose pressing public health problems worldwide, and aquatic ecosystems are recognized reservoirs for antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB). We reviewed the sources, distribution, and factors influencing ARGs and ARB in surface waters, and the methods used to measure and assess the risks posed to human and ecological health. The prevalence of ARGs and ARB is largely attributed to environmental contamination from fecal matter. Therefore, the distribution of AR on both regional and seasonal scales is significantly impacted by agriculture, which is related to economic development. In risk assessments, the risk of ARGs is mainly evaluated based on their mobility, pathogen carriage, and regional distribution, while the risk assessment for ARB is primarily focused on the quantities and diversities of pathogen-associated resistant bacteria. Based on this information, we suggest seven priority research questions regarding antibiotic resistance management in water environments: control of AR dissemination, advanced monitoring technologies, integrative impacts evaluation of antibiotics on resistance mechanisms and microbial communities, quantitative microbial risk assessment for ARB and ARGs, implications of horizontal gene transfer in non-pathogenic bacteria, synergistic risks of multiple resistance elements, and identification of high-risk ARGs and ARB in aquatic ecosystems. We also advocate for the implementation of national actions that focus on source management and environmental monitoring.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100455"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting polychlorinated biphenyls enriching in human and disrupting of thyroid hormone receptor β1

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100441

Qiao Wang , Junsong Bao , Yuhao Fan , Junjie Jiang , Ying Wang , Limei Chen , Jun Jin

Polychlorinated biphenyls (PCBs) are persistent organic pollutants renowned for their bioaccumation and toxicity. Although PCBs production and use were banned worldwide decades ago, PCBs still pose a health risk due to their environmental persistence and unintentional production. In this report, PCB concentrations and temporal trends in serum from residents of urban areas in eastern China is investigated. The endocrine-disrupting potentials of PCBs are also investigated, particularly effects on thyroid hormone receptors. Through analysis of five years of data, results indicated that dioxin-like PCBs and congener PCB209 concentrations maintained low and had no marked temporal trends, but that the indicator PCBs and particularly PCB52, PCB153, and PCB180 concentrations increased. Furthermore, to evaluate binding of PCBs to the thyroid hormone receptor TRβ1, molecular docking simulations are performed. It is found that the PCBs of PCB28, PCB52, and PCB153 can interfere with triiodothyronine binding to TRβ1, which are comparable to the effects of the polybrominated biphenyl BB-153, a known thyroid function disruptor. What's more, the PCB180 binds to TRβ1 more strongly than that of BB-153. Our results indicated that a continuously monitoring of human exposures to PCB28, PCB52, PCB153, PCB180, and a detailed assessment of thyroid function interference is necessary.

{"title":"Revisiting polychlorinated biphenyls enriching in human and disrupting of thyroid hormone receptor β1","authors":"Qiao Wang , Junsong Bao , Yuhao Fan , Junjie Jiang , Ying Wang , Limei Chen , Jun Jin","doi":"10.1016/j.emcon.2024.100441","DOIUrl":"10.1016/j.emcon.2024.100441","url":null,"abstract":"<div><div>Polychlorinated biphenyls (PCBs) are persistent organic pollutants renowned for their bioaccumation and toxicity. Although PCBs production and use were banned worldwide decades ago, PCBs still pose a health risk due to their environmental persistence and unintentional production. In this report, PCB concentrations and temporal trends in serum from residents of urban areas in eastern China is investigated. The endocrine-disrupting potentials of PCBs are also investigated, particularly effects on thyroid hormone receptors. Through analysis of five years of data, results indicated that dioxin-like PCBs and congener PCB209 concentrations maintained low and had no marked temporal trends, but that the indicator PCBs and particularly PCB52, PCB153, and PCB180 concentrations increased. Furthermore, to evaluate binding of PCBs to the thyroid hormone receptor TRβ1, molecular docking simulations are performed. It is found that the PCBs of PCB28, PCB52, and PCB153 can interfere with triiodothyronine binding to TRβ1, which are comparable to the effects of the polybrominated biphenyl BB-153, a known thyroid function disruptor. What's more, the PCB180 binds to TRβ1 more strongly than that of BB-153. Our results indicated that a continuously monitoring of human exposures to PCB28, PCB52, PCB153, PCB180, and a detailed assessment of thyroid function interference is necessary.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100441"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluate the enantioselective behavior of ethiprole: Implications for aquatic systems health and human safety

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Emerging Contaminants

Pub Date : 2025-01-01 DOI: 10.1016/j.emcon.2024.100460

Chao Zhu , Mingyue Pang , Wenwen Gong , Hengming Pang , Han Qu

Increasing numbers of chiral insecticides have been released into aquatic environments, leading to adverse effects on the environment. Furthermore, these insecticides have potentially undesirable side effects on the environment, humans and other non-target species, potentially disrupting entire ecosystems. This study investigated the effects of ethiprole enantiomers against microorganisms in sediment, duckweed, and human cells. The results showed that S-ethiprole degraded preferentially in sediment, demonstrating enantioselective behavior. In sediment, catalase and superoxide dismutase activities were significantly inhibited, and the frond number of duckweed preferably decreased with exposure to S-ethiprole at high concentration treatments (33 : 25 = R-ethiprole: S-ethiprole). Additionally, the content of chlorophyll b decreased nearly 2 times in R-ethiprole (0.42 mg/g) treatment group in comparison to S-ethiprole (0.20 mg/g) treatment. Cytotoxicity test revealed that S-ethiprole was 2 and 3 times more toxic than rac- and R-ethiprole. The expressions of CAT, SOD and caspase-3 were up-regulated in human cells treated with ethiprole enantiomers, indicating oxidative stress as a key factor in toxicity. Overall, S-ethiprole exhibited greater adverse effects than rac- and R-enantiomers in human cells. These findings demonstrate the importance of considering chirality in the risk assessment of harmful chemicals in the aquatic environment.

{"title":"Evaluate the enantioselective behavior of ethiprole: Implications for aquatic systems health and human safety","authors":"Chao Zhu , Mingyue Pang , Wenwen Gong , Hengming Pang , Han Qu","doi":"10.1016/j.emcon.2024.100460","DOIUrl":"10.1016/j.emcon.2024.100460","url":null,"abstract":"<div><div>Increasing numbers of chiral insecticides have been released into aquatic environments, leading to adverse effects on the environment. Furthermore, these insecticides have potentially undesirable side effects on the environment, humans and other non-target species, potentially disrupting entire ecosystems. This study investigated the effects of ethiprole enantiomers against microorganisms in sediment, duckweed, and human cells. The results showed that S-ethiprole degraded preferentially in sediment, demonstrating enantioselective behavior. In sediment, catalase and superoxide dismutase activities were significantly inhibited, and the frond number of duckweed preferably decreased with exposure to S-ethiprole at high concentration treatments (33 : 25 = R-ethiprole: S-ethiprole). Additionally, the content of chlorophyll <em>b</em> decreased nearly 2 times in R-ethiprole (0.42 mg/g) treatment group in comparison to S-ethiprole (0.20 mg/g) treatment. Cytotoxicity test revealed that S-ethiprole was 2 and 3 times more toxic than rac- and R-ethiprole. The expressions of CAT, SOD and caspase-3 were up-regulated in human cells treated with ethiprole enantiomers, indicating oxidative stress as a key factor in toxicity. Overall, S-ethiprole exhibited greater adverse effects than rac- and R-enantiomers in human cells. These findings demonstrate the importance of considering chirality in the risk assessment of harmful chemicals in the aquatic environment.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100460"},"PeriodicalIF":5.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0