Pub Date : 2025-03-13DOI: 10.1016/j.envpol.2025.126059
Anne Marb, Yiqun Ma, Federica Nobile, Robert Dubrow, Patrick L. Kinney, Massimo Stafoggia, Kai Chen, Annette Peters, Susanne Breitner
Ambient air pollution still represents a major health burden. While the link between short-term air pollution exposures and mortality has been well-documented globally, few studies have applied causal modeling approaches. Therefore, we aimed to quantify the relationship between day-to-day changes in ambient particulate matter with an aerodynamic diameter ≤ 2.5 μm (PM2.5) and nitrogen dioxide (NO2) levels and changes in daily natural, cardiovascular (including all-cardiovascular, cardiac, and stroke), as well as respiratory mortality rates using a causal modeling framework. Daily air pollution data and cause-specific death counts at the county, district, or municipality level from California (US), Jiangsu (China), Germany, and Lazio (Italy) were obtained for the years 2015 to 2019, including urban and rural populations. We used interactive fixed effects models to analyze the effects of air pollutants across different lag periods (0-2, 3-7, and 0-7 days after exposure) while accounting for both measured and unmeasured time-varying spatial unit-specific confounding factors. We observed increases in daily cardiovascular deaths (per 1 million people) per a 10 μg/m3 increase in daily NO2 at lag 0-7: 0.18 (95% confidence interval: -0.02, 0.38) in California, 0.23 (0.14, 0.32) in Jiangsu, 0.48 (0.27, 0.70) in Germany, and -0.35 (-2.63, 1.92) in Lazio. For PM2.5, the related increases in cardiovascular mortality rates were 0.00 (-0.18, 0.18) in California, 0.04 (0.00, 0.09) in Jiangsu, 0.22 (0.06, 0.37) in Germany, and 1.96 (0.76, 3.16) in Lazio. Additionally, associations were seen for natural, cardiac, stroke, and respiratory mortality, particularly pronounced among individuals aged 75 and older. These associations were strongest with prolonged exposures and remained consistent even in two-pollutant models. This study, using a causal modeling approach and including urban and rural populations, contributes to the growing body of evidence linking increases in short-term exposure to NO2 and PM2.5 with increased cause-specific mortality rates.
{"title":"Short-term exposure to ambient nitrogen dioxide and fine particulate matter and cause-specific mortality: a causal modeling approach in four regions","authors":"Anne Marb, Yiqun Ma, Federica Nobile, Robert Dubrow, Patrick L. Kinney, Massimo Stafoggia, Kai Chen, Annette Peters, Susanne Breitner","doi":"10.1016/j.envpol.2025.126059","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126059","url":null,"abstract":"Ambient air pollution still represents a major health burden. While the link between short-term air pollution exposures and mortality has been well-documented globally, few studies have applied causal modeling approaches. Therefore, we aimed to quantify the relationship between day-to-day changes in ambient particulate matter with an aerodynamic diameter ≤ 2.5 μm (PM<sub>2.5</sub>) and nitrogen dioxide (NO<sub>2</sub>) levels and changes in daily natural, cardiovascular (including all-cardiovascular, cardiac, and stroke), as well as respiratory mortality rates using a causal modeling framework. Daily air pollution data and cause-specific death counts at the county, district, or municipality level from California (US), Jiangsu (China), Germany, and Lazio (Italy) were obtained for the years 2015 to 2019, including urban and rural populations. We used interactive fixed effects models to analyze the effects of air pollutants across different lag periods (0-2, 3-7, and 0-7 days after exposure) while accounting for both measured and unmeasured time-varying spatial unit-specific confounding factors. We observed increases in daily cardiovascular deaths (per 1 million people) per a 10 μg/m<sup>3</sup> increase in daily NO<sub>2</sub> at lag 0-7: 0.18 (95% confidence interval: -0.02, 0.38) in California, 0.23 (0.14, 0.32) in Jiangsu, 0.48 (0.27, 0.70) in Germany, and -0.35 (-2.63, 1.92) in Lazio. For PM<sub>2.5</sub>, the related increases in cardiovascular mortality rates were 0.00 (-0.18, 0.18) in California, 0.04 (0.00, 0.09) in Jiangsu, 0.22 (0.06, 0.37) in Germany, and 1.96 (0.76, 3.16) in Lazio. Additionally, associations were seen for natural, cardiac, stroke, and respiratory mortality, particularly pronounced among individuals aged 75 and older. These associations were strongest with prolonged exposures and remained consistent even in two-pollutant models. This study, using a causal modeling approach and including urban and rural populations, contributes to the growing body of evidence linking increases in short-term exposure to NO<sub>2</sub> and PM<sub>2.5</sub> with increased cause-specific mortality rates.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"183 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
The Tibetan Plateau is an important area for persistent organic pollutants (POPs) research because of high-altitude condensation and global distillation. However, the sources of the POPs in remote regions have not been quantified, which is critical for global control of POPs. The Gyirong Valley in the Himalayas bordering Nepal serves as an important pathway for cross-border transport of POPs to the Tibetan Plateau. In this study, the occurrences of polychlorinated dibenzo-p-dioxin/furans (PCDD/Fs) and polychlorinated biphenyls (PCBs) as typical POPs were investigated in surface soil samples collected along the Gyirong Valley. The PCDD/F and PCB congener profiles and positive matrix factorization were used to identify sources and quantify their contribution to PCDD/Fs and PCBs in the valley. The main source of PCDD/Fs was long-range atmospheric transport (LRAT), while the main sources of PCBs were domestic burning of coal and wood (27.3%), LRAT (23.7%), by-products from pigments, paints, and dyes (42.4%) and industrial activities related to maintenance, disassembly or accidental releases of electrical equipment (6.5%). A backward trajectory simulation indicated that the Indian monsoon played a dominant role in facilitating the transport of POPs from Nepal through the Gyirong Valley to the Tibetan Plateau. These results for the occurrences, distribution characteristics, and primary sources of PCDD/Fs and PCBs in the Himalayas will be helpful for POPs risk assessments and control in remote regions.
{"title":"Source apportionment of polychlorinated dibenzo-p-dioxin/furans and polychlorinated biphenyls in soil from the Gyirong Valley in the Himalayas","authors":"Qingyu Guo, Mingxuan Wang, Yujue Yang, Guorui Liu, Qiuting Yang, Linjun Qin, Lili Yang, Minghui Zheng","doi":"10.1016/j.envpol.2025.126066","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126066","url":null,"abstract":"The Tibetan Plateau is an important area for persistent organic pollutants (POPs) research because of high-altitude condensation and global distillation. However, the sources of the POPs in remote regions have not been quantified, which is critical for global control of POPs. The Gyirong Valley in the Himalayas bordering Nepal serves as an important pathway for cross-border transport of POPs to the Tibetan Plateau. In this study, the occurrences of polychlorinated dibenzo-<em>p</em>-dioxin/furans (PCDD/Fs) and polychlorinated biphenyls (PCBs) as typical POPs were investigated in surface soil samples collected along the Gyirong Valley. The PCDD/F and PCB congener profiles and positive matrix factorization were used to identify sources and quantify their contribution to PCDD/Fs and PCBs in the valley. The main source of PCDD/Fs was long-range atmospheric transport (LRAT), while the main sources of PCBs were domestic burning of coal and wood (27.3%), LRAT (23.7%), by-products from pigments, paints, and dyes (42.4%) and industrial activities related to maintenance, disassembly or accidental releases of electrical equipment (6.5%). A backward trajectory simulation indicated that the Indian monsoon played a dominant role in facilitating the transport of POPs from Nepal through the Gyirong Valley to the Tibetan Plateau. These results for the occurrences, distribution characteristics, and primary sources of PCDD/Fs and PCBs in the Himalayas will be helpful for POPs risk assessments and control in remote regions.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"9 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-13DOI: 10.1016/j.envpol.2025.126068
Evert Van de Schoot, Renate A. Wesselingh, Hans Van Dyck
Light pollution caused by artificial light at night (ALAN) affects biodiversity worldwide and is still increasing. Species vary in their response to ALAN, but the impact on communities remains poorly understood. Effects of indirect light pollution by skyglow and direct streetlight pollution on communities have usually been addressed separately, and in most studies so far, urbanisation levels are a confounding factor for ALAN effects per se. Here, we sampled garden moth communities according to a study design that integrated two levels of direct streetlight pollution and two regional skyglow levels to test for additive effects of both types of ALAN. We also tested whether ALAN conditions related to community changes in species’ morphological, behavioural and life-history traits.Both skyglow and streetlights negatively affected moth abundance. Species richness and diversity decreased under direct streetlight, independent of skyglow levels. Both types of ALAN affected moth community composition and we identified several relationships with species traits in the local moth communities. Skyglow filtered for hibernating stage and larval habitation, while streetlight pollution filtered for voltinism, larval food specificity, habitat openness and hibernating stage.Our study provides evidence that both skyglow and, more strongly, streetlight pollution affect moth communities. A significant decline in moth abundance will have consequences for ecosystem functioning through reduced food availability for predators and diminished pollinator services. At the community level, ALAN operates as a filter for species and species traits, and based on our results, we argue that future studies should consider both skyglow and direct light pollution.
{"title":"Skyglow and especially direct streetlight pollution alter moth communities","authors":"Evert Van de Schoot, Renate A. Wesselingh, Hans Van Dyck","doi":"10.1016/j.envpol.2025.126068","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126068","url":null,"abstract":"Light pollution caused by artificial light at night (ALAN) affects biodiversity worldwide and is still increasing. Species vary in their response to ALAN, but the impact on communities remains poorly understood. Effects of indirect light pollution by skyglow and direct streetlight pollution on communities have usually been addressed separately, and in most studies so far, urbanisation levels are a confounding factor for ALAN effects per se. Here, we sampled garden moth communities according to a study design that integrated two levels of direct streetlight pollution and two regional skyglow levels to test for additive effects of both types of ALAN. We also tested whether ALAN conditions related to community changes in species’ morphological, behavioural and life-history traits.Both skyglow and streetlights negatively affected moth abundance. Species richness and diversity decreased under direct streetlight, independent of skyglow levels. Both types of ALAN affected moth community composition and we identified several relationships with species traits in the local moth communities. Skyglow filtered for hibernating stage and larval habitation, while streetlight pollution filtered for voltinism, larval food specificity, habitat openness and hibernating stage.Our study provides evidence that both skyglow and, more strongly, streetlight pollution affect moth communities. A significant decline in moth abundance will have consequences for ecosystem functioning through reduced food availability for predators and diminished pollinator services. At the community level, ALAN operates as a filter for species and species traits, and based on our results, we argue that future studies should consider both skyglow and direct light pollution.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"32 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-13DOI: 10.1016/j.envpol.2025.126062
Māra Deksne, Peter M. van Bodegom, Laura Scherer
Eutrophication results from nutrient overload in aquatic ecosystems and affects primary productivity patterns, which impacts the living conditions of aquatic organisms. The rivers in the catchment area of the Baltic Sea are greatly affected by eutrophication, but impacts on fish functional diversity are poorly understood. This study, therefore, evaluates the effects of freshwater eutrophication on fish functional diversity in the rivers of the Baltic Sea catchment area. Total phosphorus is used as the eutrophication indicator. Functional richness, evenness, and divergence values were calculated using comprehensive fish trait and occurrence databases. Functional evenness was found to be negatively related to eutrophication. Functional divergence demonstrated a positive relation but responded to lesser extents than functional evenness. Functional richness showed no or a negative response, depending on whether environmental covariates were considered. As a comparison, species richness revealed a negative relationship and was the most responsive to increasing eutrophication of all measures evaluated. Hence, this study demonstrates the varying nature of responses of multiple diversity indices and comprehensively describes the response of fish communities to increasing eutrophication in the area. The results show that functional redundancy helps to reduce adverse effects of species losses on functional diversity, which provides an important starting point for impact assessment. The findings illustrate that actions to limit nutrient discharge to freshwater are needed to maintain sustainable riverine ecosystems.
{"title":"Fish functional diversity responses to total phosphorus in the rivers of the Baltic Sea catchment area","authors":"Māra Deksne, Peter M. van Bodegom, Laura Scherer","doi":"10.1016/j.envpol.2025.126062","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126062","url":null,"abstract":"Eutrophication results from nutrient overload in aquatic ecosystems and affects primary productivity patterns, which impacts the living conditions of aquatic organisms. The rivers in the catchment area of the Baltic Sea are greatly affected by eutrophication, but impacts on fish functional diversity are poorly understood. This study, therefore, evaluates the effects of freshwater eutrophication on fish functional diversity in the rivers of the Baltic Sea catchment area. Total phosphorus is used as the eutrophication indicator. Functional richness, evenness, and divergence values were calculated using comprehensive fish trait and occurrence databases. Functional evenness was found to be negatively related to eutrophication. Functional divergence demonstrated a positive relation but responded to lesser extents than functional evenness. Functional richness showed no or a negative response, depending on whether environmental covariates were considered. As a comparison, species richness revealed a negative relationship and was the most responsive to increasing eutrophication of all measures evaluated. Hence, this study demonstrates the varying nature of responses of multiple diversity indices and comprehensively describes the response of fish communities to increasing eutrophication in the area. The results show that functional redundancy helps to reduce adverse effects of species losses on functional diversity, which provides an important starting point for impact assessment. The findings illustrate that actions to limit nutrient discharge to freshwater are needed to maintain sustainable riverine ecosystems.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"4 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-13DOI: 10.1016/j.envpol.2025.126058
Elisa Chiara Bizzotto , Giovanni Libralato , Lorenzo Saviano , Marta Citron , Petra Scanferla , Fabio Russo , Antonio Marcomini
Regulations for dredging and sediment management often require the use of toxicity tests to support sediment classification, together with chemical characterization; among available bioassays, embryotoxicity tests (conducted on aqueous phase prepared from sediment) are commonly applied to evaluate sub-chronic toxicity, as in the case of Italian legislation. However, toxicity tests can be influenced by several confounding factors, such as ammonia that, in the context of sediment management, generally is not considered as a “traditional” contaminant of concern due to its low persistence. In order to better address and optimize sediment management, it is therefore essential to understand the influence of ammonia on the observed sediment toxicity. The scope of this work is to provide an overview of the toxic effects of ammonia focusing on embryotoxicity endpoints, enabling a proper evaluation of sediment toxicity, discussing the role of ammonia on sediment quality classification, and contributing to improve the management options. The paper presents the results of an experimental activity aimed at evaluating the role of ammonia on sediment toxicity, jointly to a literature review delineating the range of ammonia toxicity thresholds on larval development evaluated in embryotoxicity tests for oysters, mussels and sea urchins. Results from this study demonstrated the influence of ammonia on sediment toxicity from a case-study (Venice lagoon), testing methods for toxicity identification evaluation and providing recommendation to support scientific discussion to pursue the most sustainable sediment management, especially when just the embryotoxicity endpoint is responding concomitantly to high ammonia levels, considering that; impacts primarily due to nonpersistent contaminants should be managed differently than persistent ones.
{"title":"Ammonia-rich sediment: Practical issues about embryotoxicity as endpoint supporting challenges in dredging activities","authors":"Elisa Chiara Bizzotto , Giovanni Libralato , Lorenzo Saviano , Marta Citron , Petra Scanferla , Fabio Russo , Antonio Marcomini","doi":"10.1016/j.envpol.2025.126058","DOIUrl":"10.1016/j.envpol.2025.126058","url":null,"abstract":"<div><div>Regulations for dredging and sediment management often require the use of toxicity tests to support sediment classification, together with chemical characterization; among available bioassays, embryotoxicity tests (conducted on aqueous phase prepared from sediment) are commonly applied to evaluate sub-chronic toxicity, as in the case of Italian legislation. However, toxicity tests can be influenced by several confounding factors, such as ammonia that, in the context of sediment management, generally is not considered as a “traditional” contaminant of concern due to its low persistence. In order to better address and optimize sediment management, it is therefore essential to understand the influence of ammonia on the observed sediment toxicity. The scope of this work is to provide an overview of the toxic effects of ammonia focusing on embryotoxicity endpoints, enabling a proper evaluation of sediment toxicity, discussing the role of ammonia on sediment quality classification, and contributing to improve the management options. The paper presents the results of an experimental activity aimed at evaluating the role of ammonia on sediment toxicity, jointly to a literature review delineating the range of ammonia toxicity thresholds on larval development evaluated in embryotoxicity tests for oysters, mussels and sea urchins. Results from this study demonstrated the influence of ammonia on sediment toxicity from a case-study (Venice lagoon), testing methods for toxicity identification evaluation and providing recommendation to support scientific discussion to pursue the most sustainable sediment management, especially when just the embryotoxicity endpoint is responding concomitantly to high ammonia levels, considering that; impacts primarily due to nonpersistent contaminants should be managed differently than persistent ones.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"372 ","pages":"Article 126058"},"PeriodicalIF":7.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618741","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}
Pub Date : 2025-03-13DOI: 10.1016/j.envpol.2025.126056
Michael Frett, Jessica L. Kozarek, Amelia Berry, Allen F. Mensinger
Several deterrents are currently being investigated to block the upstream migration of invasive silver (Hypophthalmichthys molitrix) and bighead carp (H. nobilis). Broadband sound (100 hp outboard boat motor recording) and dissolved CO2 both show potential for restricting the upstream movement of invasive bigheaded carp through contained environments such as lock chambers. This study examined the effect of combining both broadband sound and CO2 into a multimodal deterrent to restrict upstream passage via the lock chamber in a 10,000 L flow through model lock and dam system. Bigheaded carp schools were classically conditioned to associate broadband sound with elevated levels of CO2 in the lock chamber. After conditioning, broadband sound alone was 100% effective in restricting the upstream passage of bigheaded carp under standard lock chamber operations, and bigheaded carp were deterred from entering and transiting the lock chamber for 28 consecutive trials over a one-week period. These results could help inform field deployments of non-physical deterrents within lock chambers for restricting the upstream movement of invasive bigheaded carp.
{"title":"Evaluating CO2 and Sound as an Invasive Bigheaded Carp Deterrent in a Model Lock and Dam","authors":"Michael Frett, Jessica L. Kozarek, Amelia Berry, Allen F. Mensinger","doi":"10.1016/j.envpol.2025.126056","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126056","url":null,"abstract":"Several deterrents are currently being investigated to block the upstream migration of invasive silver (<em>Hypophthalmichthys molitrix</em>) and bighead carp (<em>H. nobilis</em>). Broadband sound (100 hp outboard boat motor recording) and dissolved CO<sub>2</sub> both show potential for restricting the upstream movement of invasive bigheaded carp through contained environments such as lock chambers. This study examined the effect of combining both broadband sound and CO<sub>2</sub> into a multimodal deterrent to restrict upstream passage via the lock chamber in a 10,000 L flow through model lock and dam system. Bigheaded carp schools were classically conditioned to associate broadband sound with elevated levels of CO<sub>2</sub> in the lock chamber. After conditioning, broadband sound alone was 100% effective in restricting the upstream passage of bigheaded carp under standard lock chamber operations, and bigheaded carp were deterred from entering and transiting the lock chamber for 28 consecutive trials over a one-week period. These results could help inform field deployments of non-physical deterrents within lock chambers for restricting the upstream movement of invasive bigheaded carp.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"88 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-12DOI: 10.1016/j.envpol.2025.126053
Song Liu, Ya-jun Shi, Wen-ming Chen, Xing-wei Cai, Ji-liang Zhang
A growing number of studies have reported that neonicotinoid (NEO) and bisamide (BIS) insecticides are widespread in multimedium; however, limited information is available on their occurrence in wild freshwater fish. Therefore, in the Wanquan River with national aquatic germplasm resource reserves in Hainan, China, 502 fish containing 22 species were collected to investigate the occurrence of twelve NEOs and six BISs. The results showed that six NEOs and three BISs were detected in liver (ND-26.1515 ng/g wet weight (ww), whereas five NEOs and three BISs were detected in muscle (ND-1.6067 ng/g ww). Clothianidin had the highest detection frequency in liver (35.26%) and muscle (53.39%); however, imidacloprid (0.2106 ng/g ww) and dinotefuran (0.0353 ng/g ww) had the highest mean concentrations. Furthermore, the results indicated significant differences in insecticide concentrations between fish with different feeding habits, habitats, and spatial distributions. Benthic fish tend to accumulate BISs in liver and carnivorous fish have highest NEOs concentration in muscle. In addition, fish in the midstream and downstream regions had higher NEOs and total concentrations than those in the upstream region. Spearman’s correlation analysis revealed significant weak negative correlations between the concentration of almost all insecticides with body length and weight. Health risk assessments indicated that the hazard quotient for all insecticides was below 1, suggesting no immediate health risk to humans from consuming freshwater fish. These findings reveal previously unrecognized contamination of BISs in wild freshwater fish and expand the dataset on NEOs occurrence in fish from different sources, establishing a critical foundation for toxicologic research, insecticide pollution control, and human health protection.
{"title":"Neonicotinoid and bisamide insecticides in wild freshwater fish from the Wanquan River, Hainan, China: Factors affecting tissue distribution and a risk assessment","authors":"Song Liu, Ya-jun Shi, Wen-ming Chen, Xing-wei Cai, Ji-liang Zhang","doi":"10.1016/j.envpol.2025.126053","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.126053","url":null,"abstract":"A growing number of studies have reported that neonicotinoid (NEO) and bisamide (BIS) insecticides are widespread in multimedium; however, limited information is available on their occurrence in wild freshwater fish. Therefore, in the Wanquan River with national aquatic germplasm resource reserves in Hainan, China, 502 fish containing 22 species were collected to investigate the occurrence of twelve NEOs and six BISs. The results showed that six NEOs and three BISs were detected in liver (ND-26.1515 ng/g wet weight (ww), whereas five NEOs and three BISs were detected in muscle (ND-1.6067 ng/g ww). Clothianidin had the highest detection frequency in liver (35.26%) and muscle (53.39%); however, imidacloprid (0.2106 ng/g ww) and dinotefuran (0.0353 ng/g ww) had the highest mean concentrations. Furthermore, the results indicated significant differences in insecticide concentrations between fish with different feeding habits, habitats, and spatial distributions. Benthic fish tend to accumulate BISs in liver and carnivorous fish have highest NEOs concentration in muscle. In addition, fish in the midstream and downstream regions had higher NEOs and total concentrations than those in the upstream region. Spearman’s correlation analysis revealed significant weak negative correlations between the concentration of almost all insecticides with body length and weight. Health risk assessments indicated that the hazard quotient for all insecticides was below 1, suggesting no immediate health risk to humans from consuming freshwater fish. These findings reveal previously unrecognized contamination of BISs in wild freshwater fish and expand the dataset on NEOs occurrence in fish from different sources, establishing a critical foundation for toxicologic research, insecticide pollution control, and human health protection.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"5 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-12DOI: 10.1016/j.envpol.2025.126054
Kuan-Chieh Feng, Muhammad Muneeb Ur Rehman, Jung-Chen Huang
As a global environmental pollutant, many studies have focused on the removal of hexavalent chromium [Cr(VI)] from industrial wastewater, using organic materials as adsorbents. This study investigated the potential of the black soldier fly (BSF) for the bioremediation of the Cr-adsorbing/containing wheat bran as an adsorbent and antagonistic effects of selenate [Se(VI)] on Cr accumulation/transformation by the BSF. Our results indicate the BSF could tolerate Cr/Se toxicity without exhibiting significant morphological changes. Cr/Se concentrations in the BSF biomass decreased over the life cycle, suggesting the detoxification of both contaminants, while relatively lower Cr but significantly higher Se concentrations were found in the larvae co-exposed to Cr and Se, compared with the Cr/Se-exposed only larvae. Low bioaccumulation factor (BAF) values (∼0.47) indicate the absorbed Cr tended to be excreted out. The XAS results suggest the accumulated Cr was mainly present as elemental chromium during growth, while the Se, potentially as an antagonist, was mainly converted to elemental selenium and organo-Se species (selenomethionine/selenocystine) in the BSF co-exposed to Cr and Se. Overall, our study provides a better understanding of the biotransformation of Cr(VI), with or without Se, by the BSF, and risks of using the Cr-containing BSF as feed.
{"title":"Bioaccumulation and biotransformation of hexavalent chromium in black soldier fly (Hermetia illucens) in the antagonism of selenate","authors":"Kuan-Chieh Feng, Muhammad Muneeb Ur Rehman, Jung-Chen Huang","doi":"10.1016/j.envpol.2025.126054","DOIUrl":"10.1016/j.envpol.2025.126054","url":null,"abstract":"<div><div>As a global environmental pollutant, many studies have focused on the removal of hexavalent chromium [Cr(VI)] from industrial wastewater, using organic materials as adsorbents. This study investigated the potential of the black soldier fly (BSF) for the bioremediation of the Cr-adsorbing/containing wheat bran as an adsorbent and antagonistic effects of selenate [Se(VI)] on Cr accumulation/transformation by the BSF. Our results indicate the BSF could tolerate Cr/Se toxicity without exhibiting significant morphological changes. Cr/Se concentrations in the BSF biomass decreased over the life cycle, suggesting the detoxification of both contaminants, while relatively lower Cr but significantly higher Se concentrations were found in the larvae co-exposed to Cr and Se, compared with the Cr/Se-exposed only larvae. Low bioaccumulation factor (BAF) values (∼0.47) indicate the absorbed Cr tended to be excreted out. The XAS results suggest the accumulated Cr was mainly present as elemental chromium during growth, while the Se, potentially as an antagonist, was mainly converted to elemental selenium and organo-Se species (selenomethionine/selenocystine) in the BSF co-exposed to Cr and Se. Overall, our study provides a better understanding of the biotransformation of Cr(VI), with or without Se, by the BSF, and risks of using the Cr-containing BSF as feed.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"372 ","pages":"Article 126054"},"PeriodicalIF":7.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-12DOI: 10.1016/j.envpol.2025.126050
Jian-Zheng Yang , Ji-Hui Li , Jia-Li Liu , An-Ding Zhou , Hui Wang , Xiao-Li Xie , Kai-Kai Zhang , Qi Wang
Nanoplastics pollution is a global issue, with the digestive tract being one of the first affected organs, requiring further research on its impact on intestinal health. This study involved orally exposing mice to polystyrene nanoplastics (PS-NPs) at doses of 0.1, 0.5, or 2.5 mg/d for 42 days. The effects on intestinal health were thoroughly assessed via microbiomics, metabolomics, transcriptomics, and molecular biology. Our study demonstrated that the administration of all three doses of PS-NPs resulted in increased colonic permeability, heightened colonic and peripheral inflammation, reduced levels of antimicrobial peptides, and shortened colonic length. These effects may be attributed to a reduction in the abundance of probiotic bacteria, such as Clostridia_UCG-014, Roseburia, and Akkermansia, alongside an increase in the abundance of the pathogenic bacterium Desulfovibrionaceae induced by PS-NPs. Furthermore, we underscored the crucial role of histidine metabolism in PS-NPs-induced colonic injury, characterized by a significant reduction of L-histidine, which is closely related to microbial ecological dysregulation. Corresponding to microbiota deterioration and metabolic dysregulation, transcriptome analysis revealed that PS-NPs may disrupt colonic immune homeostasis by activating the TLR4/MyD88/NF-κB/NLRP3 signaling pathway. In conclusion, this study provided novel insights into the mechanisms by which PS-NPs disrupt intestinal homeostasis through integrated multiomics analysis, revealing critical molecular pathway and providing a scientific basis for future risk assessment of nanoplastics exposure.
{"title":"Multiomics analysis revealed the effects of polystyrene nanoplastics at different environmentally relevant concentrations on intestinal homeostasis","authors":"Jian-Zheng Yang , Ji-Hui Li , Jia-Li Liu , An-Ding Zhou , Hui Wang , Xiao-Li Xie , Kai-Kai Zhang , Qi Wang","doi":"10.1016/j.envpol.2025.126050","DOIUrl":"10.1016/j.envpol.2025.126050","url":null,"abstract":"<div><div>Nanoplastics pollution is a global issue, with the digestive tract being one of the first affected organs, requiring further research on its impact on intestinal health. This study involved orally exposing mice to polystyrene nanoplastics (PS-NPs) at doses of 0.1, 0.5, or 2.5 mg/d for 42 days. The effects on intestinal health were thoroughly assessed via microbiomics, metabolomics, transcriptomics, and molecular biology. Our study demonstrated that the administration of all three doses of PS-NPs resulted in increased colonic permeability, heightened colonic and peripheral inflammation, reduced levels of antimicrobial peptides, and shortened colonic length. These effects may be attributed to a reduction in the abundance of probiotic bacteria, such as Clostridia_UCG-014, Roseburia, and Akkermansia, alongside an increase in the abundance of the pathogenic bacterium Desulfovibrionaceae induced by PS-NPs. Furthermore, we underscored the crucial role of histidine metabolism in PS-NPs-induced colonic injury, characterized by a significant reduction of L-histidine, which is closely related to microbial ecological dysregulation. Corresponding to microbiota deterioration and metabolic dysregulation, transcriptome analysis revealed that PS-NPs may disrupt colonic immune homeostasis by activating the TLR4/MyD88/NF-κB/NLRP3 signaling pathway. In conclusion, this study provided novel insights into the mechanisms by which PS-NPs disrupt intestinal homeostasis through integrated multiomics analysis, revealing critical molecular pathway and providing a scientific basis for future risk assessment of nanoplastics exposure.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"372 ","pages":"Article 126050"},"PeriodicalIF":7.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-03-12DOI: 10.1016/j.envpol.2025.126031
Yitong Yin , Shanshan Yang , Fei Liu , Xue Wang , Yue Chen , Ximing Luo
Sulfide induces the reductive dissolution of iron (oxyhydr) oxides, the primary host phases for arsenic (As), thereby triggering As release. We investigates the physicochemical mechanisms of three types of low molecular weight organic acids (LMWOAs) on sulfide-mediated reductive dissolution of As(V)-ferrihydrite and As release using batch experiments combined with hydro-chemical, spectroscopic, and microscopic analyses. Arsenate dominated the aqueous (97.2–100 %) and solid phases throughout the experiment. LMWOAs accelerated S(-II) consumption and As release by inhibiting FeS formation, with rates ordered as citric acid (CA) > oxalic acid (OA) > malic acid (MA) > control (Kb). At S(-II): Fe = 0.5, maximum As release was 11.78 % (Kb) and 14.60 % (CA); at S(-II): Fe = 1, it was 27.58 % (Kb) and 30.71 % (OA). LMWOAs enhanced As release via non-reductive ligand dissolution of As(V)-ferrihydrite. Secondary mineral formation in later stages re-immobilized As, with mineral layers ≥50 nm thick. LMWOAs interacted differently with secondary minerals: CA primarily adsorbed on surfaces, while MA integrated into the matrix. LMWOAs influenced As redistribution in secondary minerals, increasing contamination risks. Thus, the complex effects of organic matter (OM) on Fe, S, and As biogeochemistry must be considered in risk assessments and remediation strategies for As-contaminated sites in sulfidic environments.
{"title":"Effect mechanism of low-molecular-weight organic acids during sulfidation of As(V)-bearing ferrihydrite","authors":"Yitong Yin , Shanshan Yang , Fei Liu , Xue Wang , Yue Chen , Ximing Luo","doi":"10.1016/j.envpol.2025.126031","DOIUrl":"10.1016/j.envpol.2025.126031","url":null,"abstract":"<div><div>Sulfide induces the reductive dissolution of iron (oxyhydr) oxides, the primary host phases for arsenic (As), thereby triggering As release. We investigates the physicochemical mechanisms of three types of low molecular weight organic acids (LMWOAs) on sulfide-mediated reductive dissolution of As(V)-ferrihydrite and As release using batch experiments combined with hydro-chemical, spectroscopic, and microscopic analyses. Arsenate dominated the aqueous (97.2–100 %) and solid phases throughout the experiment. LMWOAs accelerated S(-II) consumption and As release by inhibiting FeS formation, with rates ordered as citric acid (CA) > oxalic acid (OA) > malic acid (MA) > control (Kb). At S(-II): Fe = 0.5, maximum As release was 11.78 % (Kb) and 14.60 % (CA); at S(-II): Fe = 1, it was 27.58 % (Kb) and 30.71 % (OA). LMWOAs enhanced As release via non-reductive ligand dissolution of As(V)-ferrihydrite. Secondary mineral formation in later stages re-immobilized As, with mineral layers ≥50 nm thick. LMWOAs interacted differently with secondary minerals: CA primarily adsorbed on surfaces, while MA integrated into the matrix. LMWOAs influenced As redistribution in secondary minerals, increasing contamination risks. Thus, the complex effects of organic matter (OM) on Fe, S, and As biogeochemistry must be considered in risk assessments and remediation strategies for As-contaminated sites in sulfidic environments.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"372 ","pages":"Article 126031"},"PeriodicalIF":7.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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