{"title":"Innovative analytical techniques for identifying metabolites of the UV filter homosalate through UPLC–MS: Environmental and health implications","authors":"Yi-Shiou Chiou , Chia-Hui Liu , Zih-Han Wu , Min-Feng Tseng , Shih-Chin Chang , Ya-Wen Chang , Chueh-Yi Huang , Chia-Lung Shih","doi":"10.1016/j.envpol.2025.127161","DOIUrl":"10.1016/j.envpol.2025.127161","url":null,"abstract":"<div><div>Homosalate (HMS), a widely used sunscreen ingredient, functions as a UVB absorber, protecting against harmful ultraviolet radiation. Nevertheless, laboratory investigations have prompted concerns regarding its potential to disrupt endocrine function, given that HMS demonstrates both estrogenic and anti-androgenic properties. These effects could be shaped by its metabolic byproducts. Certain HMS metabolites may carry toxicological implications. To date, no research has applied an untargeted metabolomics methodology to comprehensively explore HMS metabolism using high-resolution mass spectrometry. In this study, we used three advanced metabolomics-based data-processing approaches to comprehensively identify HMS metabolites from human liver enzyme incubation samples including two-dose difference coupled with stable isotope tracing, dose-response relationship coupled with stable isotope tracing, and mass defect filter coupled with stable isotope tracing. We identified nine peaks with the proposed structures as potential HMS metabolites. Previously reported HMS metabolites, including salicylic acid, HMS-carboxylic acid, aryl-alkyl-dihydroxylated HMS, and aryl-hydroxylated HMS-carboxylic acid, were confirmed in this study. We confirmed the proposed salicylic acid by comparison with an authentic standard. Salicylic acid may be the major HMS metabolite, showing significantly higher abundance compared with the other identified metabolites. However, salicylic acid originates from various sources, making it difficult to determine its origin. In addition, we identified two novel metabolites: M4 and M14/M15. M4 was proposed to be a hydroxylated salicylic acid; therefore, it was not an HMS structure-specific metabolite and could not serve as an exposure biomarker. In contrast, M14 and M15—identified as isomers—were proposed to be aryl-monohydroxylated-alkyl-dihydroxylated HMS and are considered HMS structure-specific metabolites. The potential of these two isomers as exposure biomarkers should be further validated in future studies.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"386 ","pages":"Article 127161"},"PeriodicalIF":7.3,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134253","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}
{"title":"Residential greenness modifies the association between long-term exposure to PM2.5 components and allergic diseases in schoolchildren: A large-scale study in Southern China","authors":"Hua-Lian Chen, Chao-Yang Chen, Cui-Lan Tang, Wei-Guo Liao, Hui-Xian Zeng, Wen-Jie Meng, Qi-Zhen Wu, Guang-Hui Dong, Jian Chen, Xiao-Wen Zeng","doi":"10.1016/j.envpol.2025.127175","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127175","url":null,"abstract":"Evidence remains limited regarding long-term exposure to fine particulate matter (PM<sub>2.5</sub>) components and allergic diseases [allergic rhinitis (AR), allergic asthma, atopic dermatitis, and food allergy] in schoolchildren, and the modifying role of residential greenness. We conducted a cross-sectional study and administered a questionnaire survey to 69,341 schoolchildren across four cities in China to gather information on allergic diseases. High-resolution (1 km × 1 km) concentrations of PM<sub>2.5</sub> and six components [nitrate (NO<sub>3</sub><sup>-</sup>), sulfate (SO<sub>4</sub><sup>2-</sup>), organic matter (OM), chloride (Cl<sup>-</sup>), black carbon (BC), and ammonium (NH<sub>4</sub><sup>+</sup>)] were derived from the ChinaHighAirPollutants dataset. Residential greenness was assessed using satellite-derived Normalized Difference Vegetation Index (NDVI). Generalized linear mixed models and weighted quantile sum (WQS) regression were used to evaluate the individual and mixture effects of PM<sub>2.5</sub> components on allergic diseases, respectively. The average concentration of PM<sub>2.5</sub> was 28.48 μg/m<sup>3</sup>. PM<sub>2.5</sub> exposure was associated with an increased risk of AR (adjusted odds ratios (ORs) = 1.04 per interquartile range (IQR) increase; 95% CI: 1.00, 1.08). SO<sub>4</sub><sup>2-</sup> and NH<sub>4</sub><sup>+</sup> were positively associated with allergic disease. WQS analysis revealed joint exposure to the six constituents significantly increased risks for allergic disease (OR = 1.29, 95% CI: 1.23, 1.35), with SO<sub>4</sub><sup>2-</sup> and NH<sub>4</sub><sup>+</sup> dominating the mixture toxicity. Higher greenness exacerbated the adverse effects of PM<sub>2.5</sub> and its components on allergic diseases and AR. In conclusion, water-soluble ions (SO<sub>4</sub><sup>2-</sup> and NH<sub>4</sub><sup>+</sup>) primarily drive PM<sub>2.5</sub>-associated allergic disease risks in schoolchildren, and greenness may strengthen the adverse effects of PM<sub>2.5</sub> components on allergic diseases.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"86 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134210","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}
Louise Verhoest, Valentine Vermeulen, Jason Vleminckx, Thomas Drouet, Nausicaa Noret
{"title":"Use of spinach as an indicator of trace metal bioavailability: Are contamination limits valid for plants and soil?","authors":"Louise Verhoest, Valentine Vermeulen, Jason Vleminckx, Thomas Drouet, Nausicaa Noret","doi":"10.1016/j.envpol.2025.127173","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127173","url":null,"abstract":"Soil trace metal (TM) contamination is a worldwide issue affecting food safety and human health. In Europe, a regulation sets maximum levels (MLs) of TM in food to protect consumers. Similarly, European countries or regions apply soil action values (SAVs) for TM above which croplands are considered contaminated (i.e. unsafe for food production). These SAVs differ from one country/region to another, in terms of the values themselves and/or the extraction methods used to measure soil TM concentrations. We grew spinach plants on 36 substrates with previous anthropogenic TM contamination and evaluated (1) the adequacy of soil TM limits implemented across nine European countries/regions in predicting whether spinach TM concentrations exceed MLs, and (2) the predictive effectiveness of eight chemical extractants (CaCl<sub>2</sub>, NaNO<sub>3</sub>, NH<sub>4</sub>NO<sub>3</sub>, DTPA, AcEDTA, two concentrations of HNO<sub>3</sub> and <em>aqua regia</em>) in estimating soil TM concentrations relevant to spinach concentrations.Our results reveal significant shortcomings in certain European soil limits applied to Belgian soils in ensuring the compliance with food MLs. Specifically, we demonstrate that the extractants commonly used to establish soil limits are generally poor predictors of spinach TM concentrations. For all TM combined, we identified chelating-saline extractants (DTPA and AcEDTA) as the most reliable compromise for predicting plant concentrations. Based on these results, we propose a revision of SAVs for each extractant used currently in Europe, as well as new SAVs tailored to the optimal extractants identified. We believe these findings are critical for enhancing soil regulations and protecting public health.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"64 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134213","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}
Giovanni Scaggiante, Daniela Zingaretti, Iason Verginelli
{"title":"Comparison of four PFAS mixtures assessment approaches based on extensive tap water and groundwater data","authors":"Giovanni Scaggiante, Daniela Zingaretti, Iason Verginelli","doi":"10.1016/j.envpol.2025.127177","DOIUrl":"10.1016/j.envpol.2025.127177","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) are persistent and toxic contaminants widely detected in drinking water systems. Regulatory responses have varied globally, with a growing need for science-based approaches to assess the health risks posed by PFAS mixtures. However, existing studies have mainly relied on isolated theoretical examples or small datasets, leaving the real-world implications of these approaches poorly understood. This study addresses this gap by applying to two high-quality datasets from large-scale PFAS monitoring campaigns conducted by the USGS four leading PFAS mixtures assessment approaches: (i) the EU approach based on thresholds for total PFAS and the sum of 20 specific PFAS; (ii) Maximum Contaminant Levels established by the US EPA; (iii) the Relative Potency Factor method under evaluation in the EU; and (iv) the Risk Assessment (US EPA RAGS) approach. These datasets cover more than 1700 groundwater and tap water samples, providing a robust basis to investigate the practical differences and consequences of each method. Results reveal significant discrepancies across methods. The EU approach, although applicable to all samples, does not consider toxicological differences among individual compounds, often underestimating health impacts. The Maximum Contaminant Levels approach offers a more health-based evaluation, though it applies to only a subset of compounds. In contrast, the Relative Potency Factor and Risk Assessment (US EPA RAGS) methods provide toxicity-weighted evaluations, offering a more robust and consistent characterization of health risks. Notably, only the Risk Assessment (US EPA RAGS) evaluates carcinogenicity effects in the PFOA and PFOS assessment, though its estimates rely on evolving and debated toxicological assumptions, requiring cautious interpretation. These findings underscore how methodological choices influence PFAS risk evaluation, offering useful insights for future environmental policy and risk assessment practices.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"386 ","pages":"Article 127177"},"PeriodicalIF":7.3,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140628","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}
{"title":"Meta-Analysis of Metabolic Responses of Earthworms to Agrochemicals: Dose-Response, Temporal Trends, and Pathway Perturbations","authors":"Praddum Kumar Namdev, Garima Stephen, Shweta Yadav","doi":"10.1016/j.envpol.2025.127174","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127174","url":null,"abstract":"Agrochemicals pose significant threats to soil ecosystems by disrupting essential biochemical pathways in soil dwelling organisms, with earthworms, key ecosystem engineers and sensitive bioindicators, being particularly vulnerable. While traditional ecotoxicological methods provide valuable organismal endpoints, metabolomics offers a systems level approach capable of detecting early, sublethal biochemical perturbations. This meta-analysis synthesizes findings from eligible studies published up to December 2024 to quantify metabolomic disruptions in earthworms exposed to various agrochemicals. Meta-regression revealed a significant inverse dose-response relationship (β = -0.45, 95% CI: -0.62 to -0.28, p < 0.001), indicating intensified metabolic suppression at higher toxicant concentrations, while temporal analysis demonstrated progressive disruption with increased exposure duration (β = 0.023, 95% CI: 0.011–0.035, p < 0.001), suggesting cumulative toxic effects. Toxicant class-specific responses varied substantially, with neonicotinoids eliciting pronounced metabolic upregulation (log<sub>2</sub>FC: 2.48) and organophosphates inducing strong metabolic suppression (log<sub>2</sub>FC: -2.95). Pathway-level analysis revealed a consistent pattern of upregulated energy and amino acid metabolism alongside downregulated carbohydrate and Tricarboxylic Acid (TCA) cycle pathways, indicating a stress-induced metabolic shift. Species-specific differences were also evident, with <em>Eudrilus eugeniae</em> displaying greater sensitivity (log<sub>2</sub>FC: -4.2) compared to the model species <em>Eisenia fetida</em>. Despite high heterogeneity among studies (I<sup>2</sup> = 96%), consistent metabolic disruption trends emerged, reinforcing the value of metabolomics in environmental monitoring. These findings highlight the need for standardized methodologies to enhance comparability and underscore the potential of metabolomics in providing mechanistic insights for ecotoxicological risk assessment.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"48 7 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134211","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}
Xin Wei , Panli Zhang , Lufeng Chen , Mengxi Cao , Wenjuan Zhang , Xing Zhang , Xiaoli Zhu , Sen Wang , Yong Liang
{"title":"Historical artisanal gold mining poses long-term risk of mercury to river ecosystems: A case study in Tongguan area of northwestern China","authors":"Xin Wei , Panli Zhang , Lufeng Chen , Mengxi Cao , Wenjuan Zhang , Xing Zhang , Xiaoli Zhu , Sen Wang , Yong Liang","doi":"10.1016/j.envpol.2025.127156","DOIUrl":"10.1016/j.envpol.2025.127156","url":null,"abstract":"<div><div>Artisanal and small-scale gold mining (ASGM) practice is an important historical source of mercury (Hg) release worldwide, which could affect the local ecosystem even after many years of inactivity. In this study, sampling and analysis of water, sediment, periphyton and nearby farmland soil were conducted to assess the current levels of total mercury (THg) and methylmercury (MeHg), and the potential impact of legacy Hg on river system in Tongguan, a typical historical ASGM area of northwestern China. Results showed that 97 % of sediments and 40 % of soils are at extremely high-risk level of Hg, and approximately 32 % of river water samples exceed the Class III guidance limit (100 ng/L of Hg) of the environmental quality standards for surface water in China. Concentration of MeHg in sediment was even higher than that reported in 2006, suggesting that legacy Hg can still be methylated and further released. Positive correlations between MeHg in water and sediment/periphyton indicated that <em>in-situ</em> Hg methylation in these matrices was the main source of MeHg in river system, while periphyton plays a more important role than sediment in this river system with rocky riverbeds. High concentration and bioaccumulation factor of MeHg were observed in periphyton, implying a substantial burden on local aquatic biota, which could pose potential health risks to local residents due to the bioaccumulation and biomagnification of MeHg through the aquatic food web. Besides, the river system in Tongguan was approximately estimated to transport 2.06 kg of THg and 0.013 kg of MeHg annually into the Yellow River. This study demonstrates that ASGM can pose a long-term risk of Hg to river ecosystem even after the mining activities ceased for nearly three decades.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"385 ","pages":"Article 127156"},"PeriodicalIF":7.3,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127859","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}
{"title":"Six-Year Trends of Concentration, Chemical Composition, Sources and Health Risks of Halogenated, Nitro and Oxygenated PAHs in Winter PM2.5 at a Rural Area in Northern China (2019-2024)","authors":"Yifan Li, Feijie Gong, Anan Qi, Qi Huang, Zhentong Sun, Lingxiao Yang, Wenxing Wang","doi":"10.1016/j.envpol.2025.127162","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127162","url":null,"abstract":"Polycyclic aromatic hydrocarbon (PAH) derivatives have attracted increasing attention due to their stronger persistence and toxicity compared to parent PAHs. Atmospheric PM<sub>2.5</sub> concentration in rural areas of northern China significantly exceeds urban levels, primarily due to widespread coal combustion and inefficient emission control measures. We conducted a six-year winter PM<sub>2.5</sub> sample collection (2019-2024) in rural coastal areas of North China, and analyzed 41 PAH derivatives (14 BrPAHs, 7 ClPAHs, 15 NPAHs, and 5 OPAHs) concentrations. All four PAH derivative classes exhibited significantly lower concentrations during 2020-2021 and followed by an increase in 2022. Although the increase in NPAHs was relatively lower than in the other groups, the results still indicated that COVID-19 control measures were effective in reducing pollution levels of these pollutants. The dominant species of BrPAHs, ClPAHs, NPAHs, and OPAHs were 7-BrDahA (21.52%-26.86%), 9-ClANT (25.25%-27.59%), 2+3N-FLT (17.62%-39.14%) and 9,10-ATQ (62.42%-82.96%), respectively. The lockdown measures effectively reduced contributions from coal/biomass combustion, traffic, and industrial sources. Coal/biomass combustion and traffic emissions rebounded rapidly after epidemic lockdown, while industrial emissions exhibited delayed recovery. The incremental lifetime cancer risks of PAH derivatives reached lowest level in 2021, then gradually increased after restrictions were lifted, and all were less than 10<sup>-6</sup>. Coal/waste combustion was the dominant health risk source for Cl/BrPAHs, while traffic emissions and secondary formation contributed most to NPAHs-associated risks.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"28 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127835","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}
Mohammad Javad Zare Sakhvidi, Amirhoushang Mehrparvar, Forouzan Zare, Masoud Rahmanian, Jun Yang, Aliasghar Ebrahimi, Saeid Fallah Aliabadi, Aram Tirgar, Mohammad Reza Mirjalili, Payam Dadvand
{"title":"Association between Exposure to Outdoor Light at Night and Sleep Habits in Shahedieh Cohort Study: A Cross-sectional Analysis","authors":"Mohammad Javad Zare Sakhvidi, Amirhoushang Mehrparvar, Forouzan Zare, Masoud Rahmanian, Jun Yang, Aliasghar Ebrahimi, Saeid Fallah Aliabadi, Aram Tirgar, Mohammad Reza Mirjalili, Payam Dadvand","doi":"10.1016/j.envpol.2025.127144","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127144","url":null,"abstract":"Exposure to light at night (LAN) in residential environments has been suggested to be associated with a range of health outcomes, including sleep problems. Yet, the available evidence remains scarce. The study was based on data from 8,284 adults (aged 35-70 years) residing in Yazd province, Iran, and participating in the Shahedieh Cohort Study enrolment phase (2015-2017). Sleep-related outcomes and covariates were collected through face-to-face interviews. Exposure to outdoor LAN (nanoWatts/cm2/sr) at different exposure windows was measured at residential addresses via satellite data. The association of LAN with sleep habits was tested using logistic regression models adjusted for relevant variables (reported as odds ratio [OR], and 95% confidence intervals [CI], per interquartile range [IQR] increase of LAN). The outdoor LAN was in the range of 0.54 to 69.27 nanoWatts/cm2/sr (IQR: 14.91). A significant association was found between exposure to outdoor LAN and shorter sleep duration (OR: 1.21; 95% CI: 1.10-1.32), and use of sleep medications (OR: 1.29; 95% CI: 1.08-1.53). In contrast, greater LAN exposure was associated with lower odds for prolonged sleep latency. Associations were mostly stronger in women (e.g., use of sleep medications in men OR: 1.19; 95% CI: 0.91-1.55 compared to women OR: 1.40; 95% CI: 1.11-1.77), non-employed, and overweight/obese participants. Considering the large proportion of the exposed population in urban areas and the ongoing urbanization, outdoor LAN can be regarded as an increasing threat for public health.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"41 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134254","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}
Anabeliza Cajas-Salazar, Greivin Pérez-Rojas, Ilena Vega-Guzmán, Ernesto Alfaro-Arrieta, Wilson Beita-Sandí, Mariela González-Pujol, Carlos E. Rodríguez-Rodríguez, Michael Méndez-Rivera, Víctor Castro-Gutiérrez
{"title":"Occurrence and environmental risk assessment of pesticides in urban wastewater in Costa Rica","authors":"Anabeliza Cajas-Salazar, Greivin Pérez-Rojas, Ilena Vega-Guzmán, Ernesto Alfaro-Arrieta, Wilson Beita-Sandí, Mariela González-Pujol, Carlos E. Rodríguez-Rodríguez, Michael Méndez-Rivera, Víctor Castro-Gutiérrez","doi":"10.1016/j.envpol.2025.127172","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.127172","url":null,"abstract":"Environmental contamination with pesticides from agricultural applications in rural areas has been widely studied, however, in urban areas, wastewater represents one of the main pathways for pesticide contamination. This issue has received little attention, particularly in developing countries, where permissive legislation often prevails. This study aimed to quantify pesticide active ingredients in urban wastewater from medium-to large-scale wastewater treatment plants (WWTPs) in Costa Rica using a broad detection protocol (442 compounds) and to estimate environmental risk through hazard quotient (HQ) calculations, ecotoxicological assays and a prioritization approach to generate a local list of high-priority pesticides. In total, 29 pesticides were detected, mainly insecticides (55%), dominated by neonicotinoids, pyrethroids and organophosphates. The most frequently detected compounds were diethyltoluamide (100% of samples), imidacloprid (91%), diuron (81%), cypermethrin (81%) and terbutryn (63%). Considering HQ values, 17 compounds exhibited high environmental risk, the most hazardous being deltamethrin (HQ=93750), diazinon (HQ=6000), cinerin II (HQ=1857), cyfluthrin (HQ=743) and cypermethrin (HQ=549). All influent and effluent samples were categorized as high risk (∑HQ ≥ 1). However, WWTPs with secondary treatment had a lower calculated ecotoxicological hazard in effluents. The prioritization criterion identified cypermethrin, diazinon, cinerin II, diuron and terbutryn as the top prime-concern pesticides (level of ecotoxicological risk = 3.6, 2.8, 2.7, 2.6 and 2.6 respectively). Ecotoxicological analyses revealed that <em>Aliivibrio fischeri</em> was the most vulnerable model organism, followed by <em>Daphnia magna</em> and <em>Lactuca sativa</em>. A significant decrease in the ecotoxicity to <em>D. magna</em> was observed when comparing influents to effluents, whereas <em>A. fischeri</em> exhibited only a slight decrease. Conversely, for <em>L. sativa,</em> some effluents showed higher toxicity. For specific WWTPs, ecotoxicity correlated well with organic matter content (R<sup>2</sup> 0.581-0.936). These findings provide critical data for regulatory authorities, identifying priority compounds from an ecotoxicological perspective, offering a case study for pesticide risk in urban wastewater in developing nations.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"70 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134214","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}
Emma Moyse , Louise B. Firth , Tim Smyth , Thomas W. Davies
{"title":"Artificial light at night alters seaweed reproductive phenology","authors":"Emma Moyse , Louise B. Firth , Tim Smyth , Thomas W. Davies","doi":"10.1016/j.envpol.2025.127155","DOIUrl":"10.1016/j.envpol.2025.127155","url":null,"abstract":"<div><div>Artificial light at night (ALAN) is a growing, globally prevalent environmental stressor. It is known to disrupt biological processes across taxa and biomes, including reproductive phenology in terrestrial plants, but its potential to alter reproductive timings in marine macroalgae remains unexplored. We used reflectance spectrometry to quantitatively assess changes in receptacle ripeness of three fucoid macroalgae species at four field sites along an ALAN gradient in Plymouth Sound, UK over a six-month period. At sites with elevated ALAN (measured using Sky Quality Meters, range 16.15–18.76 mag arcsec<sup>−2</sup>, equivalent to 3.75 × 10<sup>−2</sup>–3.38 × 10<sup>−3</sup> cd/m<sup>2</sup>), expected seasonal patterns of receptacle ripening in <em>Ascophyllum nodosum</em> were reversed, causing receptacles to continue ripening into the winter months as opposed to peaking during the summer<em>. Fucus serratus</em> also continued to ripen in winter when exposed to the highest ALAN levels (16.15 mag arcsec<sup>−2</sup>, 3.75 × 10<sup>−2</sup> cd m<sup>−2</sup>). Our results provide some of the first evidence that ALAN disrupts reproductive timings in fucoid macroalgae. Given the critical role of fucoids in coastal ecosystems worldwide, ALAN should be recognised as a potential driver of ecological change in these species. Incorporating ALAN into conservation strategies is essential for protecting these foundational habitats.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"385 ","pages":"Article 127155"},"PeriodicalIF":7.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116386","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}