广东海洋大学学报2017，Vol.37Issue(4)：61-68,8.DOI:10.3969/j.issn.1673-9159.2017.04.010
较场尾海域重金属污染评价及人体暴露风险评估
Evaluation of Heavy Metals Pollution and Risk Assessment of Human Dietary Exposure in Jiao Changwei Inshore
摘要
Abstract
This essay aims to analyze the quality of seawater, sediments, organisms and human dietary exposure risks of the Jiao Changwei inshore based on the investigation conducted in November 2015 and March 2016 with the seawater quality standard, the integrated pollution index, the potential ecological risk index and the target risk coefficient as the evaluation indicators. The results show that the concentrations of heavy metals exceed seawater quality standard in both of the two voyages. The exceeding station ratio of Pb and Hg in seawater is 40% and 20% respectively in November, 2015 voyage. As for the March, 2016 voyage, the exceeding station ratio of Cu, Pb and Hg in seawater is 5%, 20% and 5% respectively. Additionally, the concentrations of heavy metals in seawater gradually decrease from north to south. The surface sediments in the area are mainly contaminated by Cu, Pb, Cr, Hg. The concentrations of Cr in Station No.5 and Hg in Station No.15 are above the second standard of marine sediment quality. The exceeding station ratio of Cu and Cr is 16.7%, and the exceeding station ratio of Pb and Hg is 8.3%. The highest integrated pollution index and the highest potential ecological risk index is 6.02 and 65.14 respectively. The results of the principal component analysis of surface sediments in the Jiao Changwei inshore show that the heavy metals are mainly from the nearby industrial plants and coal-firing power plants. The target risk coefficient of the captured organisms-fishes, shrimps, cephalopods are as follows: fishes (0.132)> cephalopods (0.062)> shrimps(0.012). The results show that the organisms from Jiao Changwei inshore do not involve the human dietary exposure risks.关键词
重金属/海水/沉积物/生物体/风险评估Key words
Heavy metals/seawater/sediments/organisms/risk assessment分类
资源环境引用本文复制引用
赵子科,陈春亮,杨国欢,谢群,柯盛..较场尾海域重金属污染评价及人体暴露风险评估[J].广东海洋大学学报,2017,37(4):61-68,8.基金项目
海洋公益性行业科研专项(201305038-6) （201305038-6）
广东省科技计划项目(2013B021600015) （2013B021600015）
