Heavy metal toxicity, ecological risk assessment, and pollution sources in a hydropower reservoir
文献类型：期刊论文
| 作者 | Herath, Imali Kaushalya; Wu, Shengjun ; Ma, Maohua; Ping, Huang
|
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2022-01-12 |
| 页码 | 18 |
| 关键词 | Heavy metals Ecological risk Toxicity load Pollution indices Source apportion Hydropower reservoir |
| ISSN号 | 0944-1344 |
| DOI | 10.1007/s11356-022-18525-3 |
| 通讯作者 | Herath, Imali Kaushalya(imalikaushalya@yahoo.com) ; Wu, Shengjun(wsj@cigit.ac.cn) |
| 英文摘要 | Heavy metal (HM) toxicity, ecological risk, and pollution sources were analyzed using the pollution indexing and statistical methods in the Three Gorges Reservoir (TGR). The average concentration of HM increased in the order of Cr < Ni < As < Cd < Cu< Mn < Pb < Zn < Al < Fe during the recharge period and Cd < Cr < Ni < As < Cu < Pb < Mn < Zn < Al < Fe during the discharge period. Significant spatial variations of Pb, Zn, Cd, As, Mn, Ni, Cr, and Cu were observed at the upstream and downstream sampling sites. Pb sharply increased during the recharge period, ranges (6.93 -148.62 mu g/L) and exceeded WHO and USPEA standards limit. HPI, HEI, Cd, WPI indicated low pollution and moderate pollution with the strong influence of Pb and Cd in the discharge and recharging period, respectively. HTML values are below the permissible toxicity load except for Pb. The Pb toxicity removal percentage is 56.47%, suggesting that the lead's toxicity level is high in TGR and requires the removal process. Ecological risk index values indicated that pollution is low in TGR. The potential ecological risk indexes (RI) of 9.07 and 31.60 were obtained for the discharge and recharge period, respectively, indicating low potential ecological risk from heavy metals in TGR. However, RI values revealed that (Pb, Cd, As Cr Ni, Cu Zn, and Mn) were the most ecological risk HMs in TGR. A significant ecological risk of Pb and Cd distribution was observed across the TGR. Multivariate statistical results found that Pb, Cd, Zn, Mn, Ni, As, Cr, Cu mainly originate from industrial wastewater, mining, metals processing, and agricultural runoff. Fe and Al were mainly from bedrock weathering. Pb, Cd, Zn HMs are a threat to the reservoir ecosystem. This study delivered a current status of HM pollution, toxicity, ecological risk, and pollution sources, indicating a vital insight into HM pollution and water security management in the Three Gorges Reservoir. |
| 资助项目 | National Natural Science Foundation of China[41571497] ; National Natural Science Foundation of China[51779241] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000741964500005 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15051]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Herath, Imali Kaushalya; Wu, Shengjun |
| 作者单位 | Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Herath, Imali Kaushalya,Wu, Shengjun,Ma, Maohua,et al. Heavy metal toxicity, ecological risk assessment, and pollution sources in a hydropower reservoir[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2022:18. |
| APA | Herath, Imali Kaushalya,Wu, Shengjun,Ma, Maohua,&Ping, Huang.(2022).Heavy metal toxicity, ecological risk assessment, and pollution sources in a hydropower reservoir.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,18. |
| MLA | Herath, Imali Kaushalya,et al."Heavy metal toxicity, ecological risk assessment, and pollution sources in a hydropower reservoir".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022):18. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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