Mathew P. Johansen, Justin P. Gwynn, Julia G. Carpenter, Sabine Charmasson, Paul Mc Ginnity, Airi Mori, Blake Orr, Marie Simon-Cornu, Iolanda Osvath
{"title":"Radiological dose from seafood ingestion; a global summary from 40 years of study","authors":"Mathew P. Johansen, Justin P. Gwynn, Julia G. Carpenter, Sabine Charmasson, Paul Mc Ginnity, Airi Mori, Blake Orr, Marie Simon-Cornu, Iolanda Osvath","doi":"10.1080/10643389.2024.2413202","DOIUrl":"https://doi.org/10.1080/10643389.2024.2413202","url":null,"abstract":"Seafood is an important source for meeting future global nutrient demands. However, it also contributes disproportionately to the radiological ingestion dose of more than five billion world consumers– up to ∼70%–80% of the total-foods dose in some countries. Although numerous studies report seafood doses in specific populations, there is still no comprehensive evaluation answering basic questions such as “what is the ingestion dose to the average global seafood consumer?” Analysis of 238 worldwide seafood dose estimates suggests that typical adult consumers receive from 0.13 to 0.21 mSv, with a likely best estimate of 0.15 mSv per annual seafood intake. Those consuming large amounts of seafood, particularly bivalves, may experience ingestion doses exceeding 1 mSv per annual intake, surpassing other routine background dose sources. The published studies suggest that doses of 3 mSv or greater are surpassed in about 150 million adult seafood consumers worldwide. Almost all this dose comes from the natural radionuclides that are prevalent in marine systems–especially <sup>210</sup>Po. While trace levels of anthropogenic radionuclides are ubiquitous in seafoods (e.g.,<sup>137</sup>Cs and <sup>239</sup>Pu), the added dose from these is typically orders of magnitude lower. Even following the large-scale releases from the Fukushima accident, with food safety controls in place, the additional dose to consumers in Japan was small relative to routine dose from natural background radionuclides. However, the worldwide seafood dose estimates span seven orders of magnitude, indicating a need for an assessment that integrates global seafood radionuclide data as well as incorporating changes in seafood consumption and production patterns.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"109 1","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Marion Revel, Chantal K. E. van Drimmelen, Lennart Weltje, Andrew Hursthouse, Susanne Heise
{"title":"Effects of rare earth elements in the aquatic environment: Implications for ecotoxicological testing","authors":"Marion Revel, Chantal K. E. van Drimmelen, Lennart Weltje, Andrew Hursthouse, Susanne Heise","doi":"10.1080/10643389.2024.2406992","DOIUrl":"https://doi.org/10.1080/10643389.2024.2406992","url":null,"abstract":"Rare earth elements (REE) are recognized as emerging pollutants due to their widespread use in modern society (e.g., in the production of electronics, renewable energy technologies, and advanced medical devices) which leads to anthropogenically elevated concentrations in the environment with potential consequences for ecosystem health. This article critically reviews the current scientific knowledge on aquatic bioavailability and toxicity of REE and focuses on pitfalls that could influence the outcome of ecotoxicity tests. After passing our quality criteria, we reviewed 38 papers on the ecotoxicity of REE in depth. Most studies focused on freshwater environments, indicating a need for more research on marine ecosystems, particularly on marine vertebrates. The results showed that heavy REE tend to be more toxic than light REE to aquatic organisms. Critical aspects for biotesting REE include complexation with ions such as phosphates (nutrient in algae tests) and carbonates. Carbonate complexation decreases potentially bioavailable aqueous REE species and may lower toxicity at increasing water hardness, although this may also be caused by competition of REE<sup>3+</sup> and Ca<sup>2+</sup> for the same binding sites in organisms. REE have a high tendency to adsorb to glass and it is recommended to use vessels made of polyethylene terephthalate or polycarbonate instead. More research is needed on chemical speciation and the interaction of REE with various organisms, also in multi-species mesocosm studies. A robust aquatic risk assessment on REE requires information on nominal and measured concentrations in both acute and chronic ecotoxicological bioassays as well as a thorough characterization of exposure.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"27 1","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-03-02DOI: 10.1016/j.watres.2025.123429
Haijian Xie, Yanghui Shi, Jianqi Wang, Mei Li
{"title":"Groundwater pollution management with source remediation and composite geomembrane cut-off wall: an analytical model and field investigation","authors":"Haijian Xie, Yanghui Shi, Jianqi Wang, Mei Li","doi":"10.1016/j.watres.2025.123429","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123429","url":null,"abstract":"This study proposes a two-dimensional analytical model for contaminant migration through the composite GMB cut-off wall (CGCW) and aquifer system considering the effects of the leakage and source remediation. A comprehensive sensitivity analysis based on the Sobol's method is conducted to investigate the key impacts of contaminant distribution and degradation rate in the source, cut-off wall retardation factor and Darcy velocity in CGCW. The results show that the performance of the CGCW significantly is controlled by the leakage. The peak contaminant concentration at the outlet of CGCW for large leakage (10<sup>-8</sup> m/s) can be 77.1 times larger than that for small leakage (10<sup>-11</sup> m/s), with a performance deterioration of 98.7%. Additionally, the performance of the CGCW can be significantly enhanced by the source remediation technique. The CGCW will not be broken through when contaminant source degradation rate is larger than 2.9 × 10<sup>-8</sup> /s. Increasing the cut-off wall retardation factors (> 14.7) and decreasing the standard deviation of contaminant source distribution (< 0.1) can also improve the CGCW performance. Moreover, the analytical model coupled with the genetic algorithm is used for the CGCW leakage detection and performance prediction at an abandoned pesticide site based on the monitoring data. Accurate leakage detections in the field (with errors of < 5 m) can be achieved through the analytical solution, which is validated by the non-destructive high-voltage technique. The analytical solution can be an easy-to-use tool for the design, installation and construction of the CGCW at polluted sites.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"84 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Transport and transformation of colloidal and particulate mercury in contaminated watershed","authors":"Junyao Yan, Ruolan Li, Chuan Wang, Shaochen Yang, Mingyu Shao, Leiming Zhang, Ping Li, Xinbin Feng","doi":"10.1016/j.watres.2025.123428","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123428","url":null,"abstract":"Submicron colloids ubiquitously present in aquatic environments and can facilitate long transport of absorbed contaminants. Impact of particle size distribution on mercury (Hg) mobility and transformation in the complex aqueous matrices is still unclear. In this study, we considered Hg mine wastes as a natural Hg releasing source to local rivers, and collected water samples from the source to the downstream during high and low flow periods. The water samples were analyzed for Hg morphology, concentration, speciation, and isotope to understand transport and transformation dynamics along the river flows. We found that visible Hg compounds observed by transmission electron microscopy were mainly bound to particles with size fractions of <0.05 and >0.45 μm in the upstream, while the proportion of Hg bound to particles with 0.05-0.45 μm only accounted for 20.0 ± 17.1% of the total Hg (THg). With increasing distance from the mine waste pile in the downstream, nano-colloidal Hg (<0.05 μm) became the dominant from due to settling of large particles and remained constant throughout the whole river. The Hg isotope results also revealed that colloidal Hg could migrate steadily for long distances into the downstream. Most importantly, a significantly positive correlation was observed between the proportion of nano-colloidal Hg to water THg and the proportion of methylmercury (MeHg) to water THg, indicating nano-colloidal Hg as an important substrate for Hg methylation in the river. These results highlighted the pivotal role of the nano-colloidal particles as a significant reservoir for Hg in aquatic environment.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"8 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-03-02DOI: 10.1016/j.watres.2025.123423
Agata Stolecka, Przemysław Mielczarek, Marta Koziarska, Agnieszka Gruszecka-Kosowska
{"title":"Organic ultraviolet filters (OUVF) in freshwater bathing areas: necessary sunscreen protection versus environmental threat","authors":"Agata Stolecka, Przemysław Mielczarek, Marta Koziarska, Agnieszka Gruszecka-Kosowska","doi":"10.1016/j.watres.2025.123423","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123423","url":null,"abstract":"This study presents the first comprehensive assessment of seven organic ultraviolet filters (OUVFs), namely benzophenone-3 (BP3), 4-methylbenzylidene camphor (4MBC), octocrylene (OC), ethylhexyl methoxycinnamate (EHMC), isoamyl p-methoxycinnamate (IAMC), butyl methoxydibenzoylmethane (BMDBM), and homosalate (HMS), in Polish freshwater ecosystems, providing novel insights into their seasonal variability and ecological risks. Water samples from three recreational lakes and a reference reservoir were collected in April and July from both surface and water column layers were analysed to quantify OUVFs concentrations and calculate aquatic risk quotients (RQs). Our results revealed a clear seasonal pattern, with significantly higher OUVF concentrations in July, particularly at Kryspinów reservoir, coinciding with peak tourist activity. IAMC, HMS, and BMDBM were the main contributors to moderate cumulative risk values with localized high-risk values at Kryspinów, while the reference site exhibited consistently low contamination and negligible risks. This study not only establishes a baseline for OUVF contamination in Central European recreational waters but also demonstrates the utility of a multi-depth sampling approach in assessing pollution dynamics. The findings contribute to the growing understanding of emerging contaminants in freshwater ecosystems and underline the need for enhanced environmental monitoring and regulatory measures.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"33 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Sustainable Large-scale Hyper-enrichment of Gold via Ferrous Sulfide-mediated Sulfuric Acid Leaching","authors":"Weilun Qian, Zhengzheng Liu, Anyang Tang, Junfeng Kong, Lining Yu, Wenyu Feng, Huibin Zhang, Huazhen Cao, Guoqu Zheng","doi":"10.1016/j.jclepro.2025.145188","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.145188","url":null,"abstract":"The engineered transformation of low-gold-grade pyrite into hyper-enriched gold concentrates has critical significance in environmental protection and economic sustainability. Nevertheless, the artificial hyper-enrichment of gold has been challenging to achieve due to the stringent conditions required for mineralization. Herein, this work proposed a conversion of pyrite to ferrous sulfide (FeS) for realizing hyper-enrichment gold concentrates and rapid acid leaching, as well as increasing the added value of Fe and S resources simultaneously. The transition state of Fe<sub>1-x</sub>S during FeS formation provides diffusion channel for Au atom transfer and gather. Afterwards, FeS phase is able to dissolve fastly in 30 minutes, inhibiting the formation of S<sub>8</sub> secondary inclusions around gold effectively. Using this method, the gold grade can increase up to 70.70 g/t and the residue yield of the concentrates is reduced to 3.4%. Additionally, high-value Fe- and S- containing products are yielded as green vitriol and sulfur, respectively. Besides, gram-scale concentrates produced by kilogram-scale FeS are evaluated for industrial application, emphasizing process stability and economic sustainability.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"34 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Yaru Zhang, Zhipeng Yan, Nan Nan, Shiya Li, Guohua Qin
{"title":"Ozone exposure induced kidney damage in diabetic mice: the key role of lipid metabolism and water-electrolyte homeostasis","authors":"Yaru Zhang, Zhipeng Yan, Nan Nan, Shiya Li, Guohua Qin","doi":"10.1016/j.envpol.2025.125963","DOIUrl":"https://doi.org/10.1016/j.envpol.2025.125963","url":null,"abstract":"Ozone (O<sub>3</sub>) is an important environmental pollutant that has garnered growing public concern. Epidemiological studies indicate that exposure to O<sub>3</sub> is associated with an elevated risk of kidney disease, a common complication of diabetes. However, the harmful effects of O<sub>3</sub> on the kidneys remain unconfirmed. Herein, we established models for non-diabetic and diabetic mice exposed to 0.5 ppm O<sub>3</sub> for 28 days (4 h/day). We evaluated O<sub>3</sub>-induced renal injury and potential mechanisms through analyzing biochemical markers related to renal function, along with histopathology and transcriptomic sequencing of the kidneys. The results showed that O<sub>3</sub> exposure caused glomerular hypertrophy in both non-diabetic and diabetic mice, with mesangial hypercellularity and kidney function impairment specifically in diabetic mice. Furthermore, renal levels of free fatty acids and cholesterol were significantly elevated in O<sub>3</sub>-exposed diabetic mice. The important roles of lipid and water-electrolyte metabolism related pathways in O<sub>3</sub>-induced kidney damage were found by transcriptome sequencing analysis. The mRNA and/or protein expressions of some genes involved in β-ENaC and AQP2 pathways, which are related to renal water and sodium retention, were changed in diabetic mice following O<sub>3</sub> exposure by real-time quantitative PCR, immunofluorescence staining, and Western blotting. Overall, diabetic mice exhibit a higher vulnerability to adverse effects in the kidney after O<sub>3</sub> exposure than non-diabetic mice. Dysregulation of lipid metabolism and imbalance in water-electrolyte homeostasis have been discovered as key contributing mechanisms. This study offers valuable insights into mechanisms through which ambient O<sub>3</sub> poses renal health risks to both the general subjects and susceptible individuals.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"32 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528241","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}
Xu Zeng , Yue Liu , Shouyu Zhang , Cong Zeng , Dongyan Han , Kisei R. Tanaka , Mackenzie D. Mazur , Ling Cao
{"title":"Zoning effects on fish populations in a key Chinese multi-use marine protected area","authors":"Xu Zeng , Yue Liu , Shouyu Zhang , Cong Zeng , Dongyan Han , Kisei R. Tanaka , Mackenzie D. Mazur , Ling Cao","doi":"10.1016/j.ocecoaman.2025.107599","DOIUrl":"10.1016/j.ocecoaman.2025.107599","url":null,"abstract":"<div><div>Multi-use marine protected areas (MMPAs), characterized by zones with varying levels of protection, are increasingly recognized as essential fishery management tools. However, comprehensive understanding of their zoning impacts remains limited. This study investigates the effects of zoning on fish populations within Shengsi Marine Park, a prominent MMPA in the Yangtze River Delta known for its significant resource utilization and human intervention. Using Generalized Additive Models (GAMs), we evaluated how zoning influences fish community characteristics, hypothesizing that higher protection level zones and their adjacent areas would show increased values across various fish community indicators. Our results partially supported this hypothesis: total species richness and the biomass of low commercial importance (LCI) species tended to be highest in the highest protection level zone. In the second protection level zones, only the biomass of high commercial importance (HCI) species was tended to be higher than that in the third protection level zones. Notably, zones adjacent to the highest protection level zone showed enhanced biomass of HCI fishes, indicating potential spillover effects. The relative influence of zoning varied across ecological indicators: the mean size of moderate commercial importance (MCI) species demonstrated the highest relative influence at 18.86%, followed by total species richness at 15.49%, and the mean size of all species at 14.81%. In contrast, total abundance had the lowest influence at 0.03%, with LCI abundance and biomass at 0.03% and 0.18%, respectively. While zoning significantly influenced both HCI and LCI species, the impacts were more pronounced for HCI species, further supporting our hypothesis regarding differential impacts based on commercial importance. Multivariate analyses indicated that zoning explained 7% of species assemblage variation. Pairwise comparisons highlighted significant differences between third protection level zones, with <em>Cynoglossus lighti</em> emerging as the most influential species, contributing 9% to total zone dissimilarity. This study provides novel insights into the ecological effects of zoning in Chinese MMPAs and underscores the potential of MMPAs as effective spatial management tools that integrate marine conservation and fisheries management.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"263 ","pages":"Article 107599"},"PeriodicalIF":4.8,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526748","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}
Yu Zhao , Yuanmeng Song , Lulu Zhang , Jiansheng Cui , Wenzhong Tang
{"title":"Hydrological connectivity and dissolved organic matter impacts nitrogen and antibiotics fate in river-lake system before and after extreme wet season","authors":"Yu Zhao , Yuanmeng Song , Lulu Zhang , Jiansheng Cui , Wenzhong Tang","doi":"10.1016/j.jenvman.2025.124743","DOIUrl":"10.1016/j.jenvman.2025.124743","url":null,"abstract":"<div><div>The impact and mechanism of hydrological connectivity and dissolved organic matter on the fate of nitrogen and antibiotics are still lack off in a river-lake connected system under climate extreme events. This study examined the fate of NO<sub>3</sub><sup>−</sup>-N, 38 antibiotics, and dissolved organic matter (DOM) in Baiyangdian Basin, through dry and wet seasonal (after extreme rainfall) samplings at 2023. In the system, NO<sub>3</sub><sup>−</sup>-N and ∑antibiotics average concentrations were higher in the dry season, while the relative abundance of humic-like components was higher in the wet season. Spatial autocorrelation analysis showed that the high-high clusters of pollutants and DOM components were mainly distributed in rivers, and the temporal difference was significant. MixSIAR and PMF model were respectively applied to nitrogen and antibiotics sources apportionment. The results showed that non-point sources (NPS) of nitrogen and antibiotics exhibited an upward trend, while the point sources decreased from dry to wet seasons. Hydrological connectivity was characterized by using δ<sup>18</sup>O-H<sub>2</sub>O, which was higher in the wet season. Partial least squares path model revealed that hydrological connectivity directly impacted humic-like components, which were the direct influencing factor of the concentration and NPS for antibiotics and nitrogen in the connected system. Extreme rainfall weaken the impact of hydrological connectivity on the concentration and NPS of pollutants, while enhanced the impact of humic-like components on pollutants NPS. These findings clarified the impact mechanism of hydrological connectivity and DOM on nitrogen and antibiotics fate in the connected system, which plays an important role in future water quality management under extreme events.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"378 ","pages":"Article 124743"},"PeriodicalIF":8.0,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527488","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}
Yu Ma , Chunzhao Chen , Chao Yang , Qinglu Yao , Xuefei Zhou , Qinghui Huang , Ling Chen
{"title":"Unveiling polycyclic aromatic hydrocarbon pollution dynamics in river-lake sediments: Insights for energy transition","authors":"Yu Ma , Chunzhao Chen , Chao Yang , Qinglu Yao , Xuefei Zhou , Qinghui Huang , Ling Chen","doi":"10.1016/j.jenvman.2025.124737","DOIUrl":"10.1016/j.jenvman.2025.124737","url":null,"abstract":"<div><div>Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants primarily emitted by heavy industry, while their relationship with light industry has remained largely overlooked. This study quantified 16 priority PAHs in sediments from an urbanized river and its tributaries using gas chromatography coupled with triple quadrupole mass spectrometry, assessing the impact of local light industries. The total sedimentary PAH concentrations ranged from 244 to 24,616 ng/g dw (mean: 2097 ± 2673 ng/g dw), with high molecular weight PAHs predominating. PAH concentrations closely mirrored the operational footprint of the textile and shipping industries, including significantly higher PAH concentrations in the midstream compared to the upstream and downstream areas with fewer industrial activities. Additionally, PAH concentrations were significantly higher in the rainy season in the semi-closed lakes than in the dry season and normal season, likely due to increased industrial production and shipping activity, combined with the periodical closure of sluice gates that restricts the outflow of PAHs from connected lakes to the main watercourse. Multiple statistical analyses revealed that coal and petroleum combustions, primarily from these local industries, contributed 88% to the sedimentary PAH load, while vehicle exhausts and oil leakages accounted for the remaining 12%. According to sediment quality guidelines, PAHs exhibited pervasive ecological risks, even near drinking water sources. This study highlights the substantial influence of industrial activities on PAH distribution in urbanized rivers and provides a robust theoretical foundation for energy transition and drinking water protection strategies.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"378 ","pages":"Article 124737"},"PeriodicalIF":8.0,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527493","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}