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- Title
HEAVY METAL CONTAMINATION IN THE SURFACE SEDIMENTS OF XUWEI-LIEZIKOU OFFSHORE AREA, NORTHERN JIANGSU PROVINCE, CHINA.
- Authors
MENG, K.; XU, M.; LI, F.; TU, C.; DING, Y.
- Abstract
A total of 30 samples were collected from surface sediments of Xuwei-Liezikou offshore area, northern Jiangsu Province, China, and the concentrations of 7 heavy metals including As, Hg, Cu, Pb, Zn, Cr and Cd and their spatial distributions were determined. Geo-accumulation index (Igeo), pollution load index (PLI) and potential ecological risk index were applied to evaluate the pollution status. The mean concentrations of Cd, Pb, As, Zn, Cu and Hg were 2.62, 1.96, 1.70, 1.42, 1.32 and 1.30 times of their respective background values, which indicated there were obvious accumulations of these heavy metals in surface sediments. It was observed that the high heavy metal concentrations were in the western and northern regions of the study area except for Cu, mainly located in estuary and port regions. The sediments in the entire study area were moderately polluted, and the main pollution factors were Cd and Pb. The study area suffered from a level between low and moderate ecological risks, and Cd was at the considerable ecological risk level, Hg was a moderate ecological risk, while other metals had low ecological risk level.
- Subjects
JIANGSU Sheng (China); HEAVY metals; SURFACE contamination; METALLIC surfaces; SEDIMENTS; PROVINCES
- Publication
Applied Ecology & Environmental Research, 2019, Vol 17, Issue 2, p2881
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/1702_28812892