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Distribution Characteristics and Potential Ecological Risk Assessment of Heavy Metals in Coastal Sediments of Qidong,Jiangsu Province(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2023年02期
Page:
62-68
Research Field:
环境科学与工程
Publishing date:

Info

Title:
Distribution Characteristics and Potential Ecological Risk Assessment of Heavy Metals in Coastal Sediments of Qidong,Jiangsu Province
Author(s):
Zhou Xiang1; Liu Qing2; Wu Hen2
(1.China Energy Engineering Group Jiangsu Power Design Institute Co.,Ltd,Nanjing 211102,China)
(2.School of Marine Science and Engineering,Nanjing Normal University,Nanjing 210023,China)
Keywords:
sediments; heavy metals; ecological risks; Qidong coastal region
PACS:
P76
DOI:
10.3969/j.issn.1672-1292.2023.02.009
Abstract:
In order to reveal the pollution characteristics of heavy metal in the sediments of the Qidong coastal region,Jiangsu Province,we have measured the concentrations of seven heavy metal elements(Cu,Pb,Zn,Cr,Cd,Hg and As)in 10 surface sediments collected in Qidong coastal region,Jiangsu Province in 2016,and analyzed the pollution characteristics and potential ecological risks of heavy metal. The results show that the concentration of heavy metals in sediments are Zn,Cr,Pb,Cu,As,Cd and Hg in the order from high to low. Among them,the contents of Zn,Pb,Cu,As and Cd are all higher than the background value of heavy metal in Jiangsu tidal flat area,indicating that these heavy metal elements pollute the marine environment to a certain extent. There are obvious differences in the spatial distribution of heavy metal content,and the high value areas are mainly distributed in the ports and estuaries,indicating that the pollutants discharged into the sea by human activities have a great impact on the coastal ecological environment. In addition,the results of geoaccumulation index show that the pollution degree is low except Cd. The heavy metal levels generally indicated medium ecological risks,except for Cd. Therefore,it is necessary to control heavy metal contamination caused by anthropogenic activities in studied area.

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Last Update: 2023-06-15