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Distribution and assessment of heavy metals off the Changjiang River mouth and adjacent area during the past century and the relationship of the heavy metals with anthropogenic activity
Hu, Gang1,2,3; Bi, Shipu1,2,3; Xu, Gang1,2,3; Zhang, Yong1,2,3; Mei, Xi1,3; Li, Anchun4
2015-07-15
发表期刊MARINE POLLUTION BULLETIN
卷号96期号:1-2页码:434-440
文章类型Article
摘要Forty-three surface sediment samples and one gravity core obtained from the offshore area of the Changjiang River were analyzed for selected heavy metals (Cu, Pb, Zn, Cd, As, Hg) to evaluate the spatial distribution and potential ecological risk during the last century. The results indicated that the sediments are composed of silty sand, sandy silt and silt and were deposited in a relatively stable environment over the last century. The studied marine sediments are fine and easily adsorb heavy metals from aquatic systems. The heavy metal concentrations were found to be enriched in the sediments and were generally closely related to anthropogenic activities. However, the data analysis demonstrated that the levels of heavy metal contamination were below background values during the last century, indicating low ecological risk. Spatially, a higher concentration was found at the entrance to the Changjiang River, while it decreased to the northeast. The vertical distribution of contamination levels and ecological risk can be divided into four periods based on the downcore variation in heavy metals: pre-1940s, 1940s-1970s, 1970s-1990s and the late 1990s to the present. These conclusions form the basis for implementing appropriate policies to protect marine sediment quality. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Heavy Metal Environmental Assessment Changjiang River Anthropogenic Activity
DOI10.1016/j.marpolbul.2015.05.009
收录类别SCI
语种英语
WOS记录号WOS:000357348900057
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/48984
专题海洋地质与环境重点实验室
作者单位1.Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
2.China Geol Survey, Key Lab Coastal Wetland Biogeosci, Qingdao 266071, Peoples R China
3.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
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Hu, Gang,Bi, Shipu,Xu, Gang,et al. Distribution and assessment of heavy metals off the Changjiang River mouth and adjacent area during the past century and the relationship of the heavy metals with anthropogenic activity[J]. MARINE POLLUTION BULLETIN,2015,96(1-2):434-440.
APA Hu, Gang,Bi, Shipu,Xu, Gang,Zhang, Yong,Mei, Xi,&Li, Anchun.(2015).Distribution and assessment of heavy metals off the Changjiang River mouth and adjacent area during the past century and the relationship of the heavy metals with anthropogenic activity.MARINE POLLUTION BULLETIN,96(1-2),434-440.
MLA Hu, Gang,et al."Distribution and assessment of heavy metals off the Changjiang River mouth and adjacent area during the past century and the relationship of the heavy metals with anthropogenic activity".MARINE POLLUTION BULLETIN 96.1-2(2015):434-440.
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