论文
论文编号:
论文题目: Distribution and risk assessment of heavy metals in river surface sediments of middle reach of Xijiang River basin, China
第一作者: Zhang Jun, Yan Qinyin, Jiang Jinping, Song Bo etc.
联系作者:
外单位作者单位:
发表年度: 2018
卷: 24
期: 2
页码:
摘要:
英文摘要: Xijiang River is the main surface water source in Guangxi province, South China. This study was carried out to investigate the distribution and potential ecological risks of seven heavy metals (Cu, Pb, Zn, As, Cd, Ni, and Cr) in surface sediments in Xijiang River basin. The results illustrated that the average concentrations of Zn, Pb, Cd, Cu, As, Ni, and Cr were 483.9, 207.5, 13.35, 23.50, 312.1, 28.75, and 50.62 mg/kg, respectively. Among them, Zn, Pb, Cd, and As were the major heave metals with concentration exceeding Class 3 threshold value of Chinese national standard. The result also showed samples with high ecological risk were mainly located in the upstream of Xijiang River basin as Diaojiang River, Hongshui River, Jincheng River, and Dahuan River. Based on the pollution risk assessment, the area manifested composite pollution of heavy metals in the sediments, signifying As, Pb, and Cd as the dominant heavy metals, and there were high ecological risk in sediments for these metals. According to correlation matrix and factor analysis (FA), the seven heavy metals were divided into three types/classes, Cd, as and Zn attributed by anthropogenic sources, natural sources corresponds for Ni and Cr while both natural and anthropogenic sources were attributed to Cu.
刊物名称: HUMAN AND ECOLOGICAL RISK ASSESSMENT
全文链接:
论文出处:
论文类别: SCI
论文下载: