[1]周 翔,刘 晴,吴 痕.江苏启东近岸海域沉积物重金属分布特征及其潜在生态风险评价[J].南京师范大学学报(工程技术版),2023,23(02):062-68.[doi:10.3969/j.issn.1672-1292.2023.02.009]
　Zhou Xiang,Liu Qing,Wu Hen.Distribution Characteristics and Potential Ecological Risk Assessment of Heavy Metals in Coastal Sediments of Qidong,Jiangsu Province[J].Journal of Nanjing Normal University(Engineering and Technology),2023,23(02):062-68.[doi:10.3969/j.issn.1672-1292.2023.02.009]
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江苏启东近岸海域沉积物重金属分布特征及其潜在生态风险评价
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
23卷
期数:
2023年02期
页码:
062-68
栏目:
环境科学与工程
出版日期:
2023-06-15

文章信息/Info

Title:
Distribution Characteristics and Potential Ecological Risk Assessment of Heavy Metals in Coastal Sediments of Qidong,Jiangsu Province
文章编号:
1672-1292(2023)02-0062-07
作者:
周 翔1; 刘 晴2; 吴 痕2
(1.中国能源建设集团江苏省电力设计院有限公司,江苏 南京 211102)
(2.南京师范大学海洋科学与工程学院,江苏 南京 210023)
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)
关键词:
沉积物; 重金属; 生态风险评价; 启东近海
Keywords:
sediments; heavy metals; ecological risks; Qidong coastal region
分类号:
P76
DOI:
10.3969/j.issn.1672-1292.2023.02.009
文献标志码:
A
摘要:
为了揭示江苏启东近海沉积物中重金属污染特征,对2016年在近岸海域获取的10个站位沉积物样品进行了重金属含量测定,分析了江苏启东海域表层沉积物7种重金属元素(Cu、Pb、Zn、Cr、Cd、Hg和As). 结果表明,沉积物中重金属的含量由高到低依次为Zn、Cr、Pb、Cu、As、Cd、Hg,其中Zn、Pb、Cu、As和Cd元素含量均大于该海域沉积物重金属含量自然背景值,意味着这些重金属元素对江苏近海海洋生态环境有着不同程度的污染. 空间上,沉积物重金属污染存在明显的空间差异性,高值区主要分布在港口和河口入海处,表明近海生态环境受人类活动和陆源污染物入海影响较大. 沉积物重金属地累积指数结果显示除Cd元素外,其它重金属元素污染程度相对较低. 潜在生态风险指数结果表明启东近海沉积物环境重金属生态风险总体处于中等水平. 因此,有必要加强对该区域人类活动所产生的重金属污染进行控制.
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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备注/Memo

备注/Memo:
收稿日期:2022-11-20.
基金项目:江苏省自然科学基金项目(BK20200735)、江苏省海洋科技创新项目(JSZRHYKJ202103).
通讯作者:刘晴,博士,讲师,研究方向:海洋资源与环境. E-mail:liuq@njnu.edu.cn
更新日期/Last Update: 2023-06-15