IOCAS-IR  > 海洋地质与环境重点实验室
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
Source PublicationMARINE POLLUTION BULLETIN
Volume96Issue:1-2Pages:434-440
SubtypeArticle
AbstractForty-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.
KeywordHeavy Metal Environmental Assessment Changjiang River Anthropogenic Activity
DOI10.1016/j.marpolbul.2015.05.009
Indexed BySCI
Language英语
WOS IDWOS:000357348900057
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Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/48984
Collection海洋地质与环境重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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