Understanding the Heavy Metal Pollution Pattern in Sediments of a Typical Small- and Medium-Sized Reservoir in China

文献类型： 外文期刊

第一作者： Bao, Qibei

作者： Bao, Qibei;Bao, Qibei;Liu, Cheng;Yu, Juhua;Fan, Chengxin;Shen, Qiushi;Friese, Kurt;Dadi, Tallent;Shen, Qiushi;Yu, Juhua;Shen, Qiushi

作者机构：

关键词： heavy metal; sediment; source apportion; positive matrix factorization receptor model; pollution pattern; Tongjiqiao Reservoir

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.799 ）

ISSN：

年卷期： 2023 年 20 卷 1 期

页码：

收录情况： SCI

摘要： Heavy metal pollution in sediments is a common environmental issue in small- and medium-sized reservoirs not only in China but also worldwide; however, few interpretations of the pollution pattern exist. Based on the analyses of accumulation characteristics, ecological risks, and source apportionments of eight heavy metals (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn) in sediments, we derived a paradigm to describe the pollution pattern of heavy metals in sediments of a typical small- and medium-sized Tongjiqiao Reservoir. The results showed high levels of Cd, Hg, and As pollutants in the surface and upper sediment layers of the pre-dam area. Additionally, As, Cd, Hg, and Pb pollutants peaked in the middle layers of the inflow area, indicating a high ecological risk in these areas. The positive matrix factorization results implied that industrial, agricultural, and transportation activities were the main sources of heavy metals. The heavy metal pollution pattern exhibited three distinct stages: low contamination, rapid pollution, and pollution control. This pattern explains the heavy metal pollution process in the sediments and will provide scientific guidance for realizing the green and sustainable operation and development of the reservoir.

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