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深圳近海环境重金属空间分布特征与风险评价
引用本文:张海军,史本宁,焦学尧,吴海轮,周琳,沈小雪,李瑞利. 深圳近海环境重金属空间分布特征与风险评价[J]. 北京大学学报(自然科学版), 2021, 57(4): 679-690. DOI: 10.13209/j.0479-8023.2021.032
作者姓名:张海军  史本宁  焦学尧  吴海轮  周琳  沈小雪  李瑞利
作者单位:1. 中交天津航道局有限公司, 天津 3004612. 中交天航南方交通建设有限公司, 深圳 5180003. 北京大学深圳研究生院, 环境与能源学院, 深圳 518055
基金项目:深圳市科技计划项目(JSGG20170824110218769)资助
摘    要:通过文献检索,分析深圳近海海水和表层沉积物中重金属污染的空间分布特征,并采用WQI污染指数法、物种敏感性分布法和潜在生态风险指数法,分别对海水和表层沉积物中的重金属污染进行生态风险评价,得到以下结果.1)深圳近海海域中,西部水体中重金属Hg,Cu,Pb和Cd的含量高于东部,可能与西部开发力度大、接纳污染多和深圳湾水体交...

关 键 词:深圳近海  沉积物  重金属  空间分布  风险评价
收稿时间:2020-04-23

Spatial Distribution Characteristics and Risk Assessment of Heavy Metals in Shenzhen Coastal Areas
ZHANG Haijun,SHI Benning,JIAO Xueyao,WU Hailun,ZHOU Lin,SHEN Xiaoxue,LI Ruili. Spatial Distribution Characteristics and Risk Assessment of Heavy Metals in Shenzhen Coastal Areas[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2021, 57(4): 679-690. DOI: 10.13209/j.0479-8023.2021.032
Authors:ZHANG Haijun  SHI Benning  JIAO Xueyao  WU Hailun  ZHOU Lin  SHEN Xiaoxue  LI Ruili
Affiliation:1. CCCC-Tianjin Dredging CO. Ltd., Tianjin 3004612. CCCC TDC Southern Communications Construction Co. Ltd, Shenzhen 5180003. School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055
Abstract:This study analyzed the spatial distribution characteristics of heavy metal pollution in seawater and surface sediments in Shenzhen coastal areas by literature retrieval methods. The WQI (water quantity index), Species Sensitivity Distribution method, and potential ecological risk index method were applied to conduct the ecological risk assessments of heavy metal pollution in seawater and surface sediments. The results showed that: 1) The contents of Hg, Cu, Pb, and Cd in the seawater of the west was higher than that of the east, which may be related to the development of the west, more pollution and the poor water exchange of water in the Shenzhen Bay. 2) Based on the first category of Sea Water Quality Standard, WQI>1 indicated that there was no clean water in Shenzhen coastal areas; the ecological risk of heavy metals in offshore water was mostly at high or medium risk levels, in the order of Cu>Hg>Cd>Pb. 3) The contents of heavy metals Cd, Cu, Zn, Pb and Cr in the surface sediments of Shenzhen coastal areas decreased from the northwestern Pearl River Estuary to the southeastern seas; the pollution of Hg and As was concentrated in the Shenzhen Bay and the eastern seas; heavy metal pollution in surface sediments was closely related to the frequent human activities and consistent with the distribution in seawater. 4) The comprehensive potential ecological risk of heavy metals in surface sediments in Shenzhen coastal areas was extremely high, with Cd having the highest ecological risk, followed by Cu and Hg.
Keywords:Shenzhen coastal areas  sediments  heavy metals  spatial distribution  risk assessment   
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