Yangtze River: the potential ecological risk of heavy metals in sediment from 1996 to 2012

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Song, Xinyu^1 ; Xu, Lina^1 ; Dai, Yanhui^1

Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao

266100, China^1

关键词: Analysis method;    Ecological risks;    Heavy metal contents;    Heavy metal pollution;    Management and controls;    Potential ecological risk;    Research object;    Yangtze River basin;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012030/pdf
DOI  :  10.1088/1755-1315/61/1/012030

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Yangtze River is a typical river basin in China. As the third largest river in the world and closely related to the life of 4 hundred million people, the Yangtze River has attracted much attention. The heavy metal content of sediments is an important part to evaluate the heavy metal pollution in aquatic ecosystem. In this work, seven kinds of heavy metals including Cu, Hg, Pb, Zn, Cr, Cd and As were selected as the research objects, and the potential ecological risk index method was selected as the analysis method. Based on the results on the investigations of heavy metals in Yangtze River sediments in recent 20 years that we could find until 2016, we conducted a collection and analysis. The results showed that the potential ecological risk of these seven heavy metals in the Yangtze River Basin in the past 20 years had a low level. In addition, the ecological risk factors of Cd and Hg were significantly higher than other heavy metals, which should be paid attention in the future management and control work.