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Spatial distribution and contamination assessment of heavy metal pollution of sediments in coastal reclamation areas: a case study in Shenzhen Bay, China
Zhang,Qiuying1; Ren,Futian1; Xiong,Xiangyun2; Gao,Hongjie1; Wang,Yudong2; Sun,Wenjun2; Leng,Peifang3; Li,Zhao3; Bai,Yangwei1
2021-08-06
Source PublicationEnvironmental Sciences Europe
ISSN2190-4707
Volume33Issue:1
Corresponding AuthorZhang,Qiuying(zhangqy@craes.org.cn) ; Ren,Futian(renfutiann@163.com)
AbstractAbstractBackgroundWith the continuous advancement of global urbanisation, humans have begun to overutilise or improperly utilise the natural resources of bay areas, which has led to a series of ecological and environmental problems. To evaluate the spatial distributions and potential ecological risks of heavy metals in sediments of Shenzhen Bay, China, an analysis of As, Cd, Cr, Cu, Pb, and Zn regarding their content, correlation (Pearson coefficient), pollution degree, and potential ecological risks was conducted.ResultsThe heavy metal contents in the sediments decreased in the order of Zn?>?Cu?>?Cr?>?Pb?>?As?>?Cd, with contents of 175.79?mg?kg?1, 50.75?mg?kg?1, 40.62?mg?kg?1, 37.10?mg?kg?1, 18.27?mg?kg?1, and 0.20?mg?kg?1, respectively. The results showed that the overall sediment quality in Shenzhen Bay generally met the China Marine Sediment Quality criteria, and the heavy metal contents were significantly lower than those reported in the same type of bay area worldwide. Furthermore, the order of grade of potential ecological risk of the heavy metals was as follows: As and Cd were found to pose moderate ecological risks, with their potential hazard indices reaching a high level, whereas the potential ecological hazard indices of Cu, Pb, Zn, and Cr were all at relatively low levels.ConclusionsThe potential hazard indices of the heavy metals decreased from the inner bay toward the outside. The accumulation and content of the analysed heavy metals in the Shenzhen Bay sediments are mainly controlled by historical land-source pollution and land reclamation projects. This study presents the current state of sediment quality in Shenzhen Bay. The results may assist in the definition of future bay area management measures specifically targeted at monitoring heavy metal contamination.
KeywordHeavy metal Sediments Potential ecological risk Source analysis Shenzhen Bay
DOI10.1186/s12302-021-00532-9
Language英语
WOS IDBMC:10.1186/s12302-021-00532-9
PublisherSpringer Berlin Heidelberg
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163896
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang,Qiuying; Ren,Futian
Affiliation1.Chinese Research Academy of Environmental Sciences; State Key Laboratory of Environmental Criteria and Risk Assessment
2.Guangdong Shenzhen Ecological and Environmental Monitoring Centre
3.Institute of Geographic Sciences and Natural Resources Research
Recommended Citation
GB/T 7714
Zhang,Qiuying,Ren,Futian,Xiong,Xiangyun,et al. Spatial distribution and contamination assessment of heavy metal pollution of sediments in coastal reclamation areas: a case study in Shenzhen Bay, China[J]. Environmental Sciences Europe,2021,33(1).
APA Zhang,Qiuying.,Ren,Futian.,Xiong,Xiangyun.,Gao,Hongjie.,Wang,Yudong.,...&Bai,Yangwei.(2021).Spatial distribution and contamination assessment of heavy metal pollution of sediments in coastal reclamation areas: a case study in Shenzhen Bay, China.Environmental Sciences Europe,33(1).
MLA Zhang,Qiuying,et al."Spatial distribution and contamination assessment of heavy metal pollution of sediments in coastal reclamation areas: a case study in Shenzhen Bay, China".Environmental Sciences Europe 33.1(2021).
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