Kuo Pang , Lu Liu , Junlan Yang , Hongjun Zhao , Wei Hu , Xiaonan Ji , Yali Guo , Min Li
{"title":"长江流域沉积物中痕量金属(loid)s的源导向精确风险评价","authors":"Kuo Pang , Lu Liu , Junlan Yang , Hongjun Zhao , Wei Hu , Xiaonan Ji , Yali Guo , Min Li","doi":"10.1016/j.envpol.2025.126896","DOIUrl":null,"url":null,"abstract":"<div><div>Trace metal(loid)s (TMs) in river sediments pose significant threats to aquatic ecosystems and human health, with risk sources exhibiting substantial spatial heterogeneity across large basins. Precise identification of priority TMs for control and high-risk regions is critical for effective basin-scale management. This study integrated Positive Matrix Factorization (PMF) source apportionment with publicly available data (2000–2020) to assess source-specific ecological and human health risks in the Yangtze River sub-basins. The results demonstrated that Cd accumulation exceeded regional background levels by an average factor of 19.62 across all sub-basins, with anthropogenic activities (industrial, agricultural, and mining) contributing over 60 % of total TMs, especially exceeding 80 % in Dongtinghu (DTH) and Poyanghu (PYH). Ecological risk assessments revealed that 24.8 % of the basin exhibited moderate-to-high risk, with industrial sources alone accounting for 38.1 %. However, human health risks remained below safety thresholds (<1 % for both carcinogenic and non-carcinogenic risks). Markedly, agricultural-derived As dominated non-carcinogenic risk basin-wide, while industrial and natural sources, along with the elements Cr and As, respectively drove carcinogenic risk in most sub-basins. The DTH sub-basin, which exhibited the highest combined risks, required particularly stringent exposure controls (≤47 days/year for non-carcinogenic and ≤122 days/year for carcinogenic risks in children). This study refines the source-oriented assessment results and establishes specific exposure parameter thresholds. The result provides a scientific basis for preventive measures and precision management of heavy metal pollution in the Yangtze River Basin.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"384 ","pages":"Article 126896"},"PeriodicalIF":7.3000,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A source-oriented precise risk assessment of trace metal(loid)s in sediments of the Yangtze River Basin\",\"authors\":\"Kuo Pang , Lu Liu , Junlan Yang , Hongjun Zhao , Wei Hu , Xiaonan Ji , Yali Guo , Min Li\",\"doi\":\"10.1016/j.envpol.2025.126896\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Trace metal(loid)s (TMs) in river sediments pose significant threats to aquatic ecosystems and human health, with risk sources exhibiting substantial spatial heterogeneity across large basins. Precise identification of priority TMs for control and high-risk regions is critical for effective basin-scale management. This study integrated Positive Matrix Factorization (PMF) source apportionment with publicly available data (2000–2020) to assess source-specific ecological and human health risks in the Yangtze River sub-basins. The results demonstrated that Cd accumulation exceeded regional background levels by an average factor of 19.62 across all sub-basins, with anthropogenic activities (industrial, agricultural, and mining) contributing over 60 % of total TMs, especially exceeding 80 % in Dongtinghu (DTH) and Poyanghu (PYH). Ecological risk assessments revealed that 24.8 % of the basin exhibited moderate-to-high risk, with industrial sources alone accounting for 38.1 %. However, human health risks remained below safety thresholds (<1 % for both carcinogenic and non-carcinogenic risks). Markedly, agricultural-derived As dominated non-carcinogenic risk basin-wide, while industrial and natural sources, along with the elements Cr and As, respectively drove carcinogenic risk in most sub-basins. The DTH sub-basin, which exhibited the highest combined risks, required particularly stringent exposure controls (≤47 days/year for non-carcinogenic and ≤122 days/year for carcinogenic risks in children). This study refines the source-oriented assessment results and establishes specific exposure parameter thresholds. The result provides a scientific basis for preventive measures and precision management of heavy metal pollution in the Yangtze River Basin.</div></div>\",\"PeriodicalId\":311,\"journal\":{\"name\":\"Environmental Pollution\",\"volume\":\"384 \",\"pages\":\"Article 126896\"},\"PeriodicalIF\":7.3000,\"publicationDate\":\"2025-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Pollution\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0269749125012692\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Pollution","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0269749125012692","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
A source-oriented precise risk assessment of trace metal(loid)s in sediments of the Yangtze River Basin
Trace metal(loid)s (TMs) in river sediments pose significant threats to aquatic ecosystems and human health, with risk sources exhibiting substantial spatial heterogeneity across large basins. Precise identification of priority TMs for control and high-risk regions is critical for effective basin-scale management. This study integrated Positive Matrix Factorization (PMF) source apportionment with publicly available data (2000–2020) to assess source-specific ecological and human health risks in the Yangtze River sub-basins. The results demonstrated that Cd accumulation exceeded regional background levels by an average factor of 19.62 across all sub-basins, with anthropogenic activities (industrial, agricultural, and mining) contributing over 60 % of total TMs, especially exceeding 80 % in Dongtinghu (DTH) and Poyanghu (PYH). Ecological risk assessments revealed that 24.8 % of the basin exhibited moderate-to-high risk, with industrial sources alone accounting for 38.1 %. However, human health risks remained below safety thresholds (<1 % for both carcinogenic and non-carcinogenic risks). Markedly, agricultural-derived As dominated non-carcinogenic risk basin-wide, while industrial and natural sources, along with the elements Cr and As, respectively drove carcinogenic risk in most sub-basins. The DTH sub-basin, which exhibited the highest combined risks, required particularly stringent exposure controls (≤47 days/year for non-carcinogenic and ≤122 days/year for carcinogenic risks in children). This study refines the source-oriented assessment results and establishes specific exposure parameter thresholds. The result provides a scientific basis for preventive measures and precision management of heavy metal pollution in the Yangtze River Basin.
期刊介绍:
Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health.
Subject areas include, but are not limited to:
• Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies;
• Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change;
• Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects;
• Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects;
• Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest;
• New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.