Contamination Assessment and Source Identification of Heavy Metals in River Sediments in Nantong, Eastern China

被引:15
|
作者
Huang, Shunsheng [1 ]
Tu, Jun [2 ]
Jin, Yang [1 ]
Hua, Ming [1 ]
Wu, Xinmin [1 ]
Xu, WeiWei [1 ]
Yang, Yongbiao [1 ]
Wang, Haiou [1 ]
Su, Yiming [1 ]
Cai, Luming [1 ]
机构
[1] Geol Survey Jiangsu Prov, Nanjng 210018, Peoples R China
[2] Kennesaw State Univ, Dept Geog & Anthropol, 1000 Chastain Rd, Kennesaw, GA 30144 USA
关键词
Heavy metal; River sediments; Multivariate analysis; Geo-accumulation index; Spatial analysis; Eastern China; SPATIAL-DISTRIBUTION; SURFACE SEDIMENTS; ECOLOGICAL RISK; POLLUTION EVALUATION; SOURCE APPORTIONMENT; DRINKING-WATER; ESTUARY; MERCURY; TAIWAN; SOIL;
D O I
10.1007/s41742-018-0097-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Heavy metal pollution in river sediments caused by industrialization and urbanization is a pressing environmental issue around the world. This issue is more serious in the rapidly industrializing countries like China. In this study, the contamination and sources of nine metals (Al, As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in 134 river sediments in Nantong, Eastern China have been analyzed using various statistical and spatial analysis techniques. Contamination level assessments using enrichment factor (EF), geo-accumulation index (I-geo), and ecological risk index (RI) revealed that rivers suffer severe heavy metal pollutions, especially for Pb and Zn. Four main potential sources of the metals were identified using principal component analysis (PCA) and cluster analysis (CA). They are: (1) industrial sources contributing As, Cr, Pb, Zn, and partly Cu, (2) parent materials contributing Al, Ni, and partly Cu, (3) municipal and domestic wastes associated with Hg, and (4) excessive fertilizer application responsible for Cd. The potential sources were further verified by comparing their spatial distributions and the locations of the actual local sources using GIS (Geographic Information System)-based spatial analysis. The results are useful for environmental protection agencies to target corresponding pollution sources for the contaminations of specific heavy metals.
引用
收藏
页码:373 / 389
页数:17
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