马鹏程^1,2,3,
陈棉彪^2,3,
黄楚珊^2,3,
胡国成^2,3,
李良忠^2,3,
王钰钰^2,3,
彭晓武^2,3,
柳晓琳¹,
张丽娟^2,3
1. 锦州医科大学, 锦州 121000;
2. 环境保护部华南环境科学研究所 环境健康研究中心, 广州 510535;
3. 国家环境保护环境污染健康风险评价重点实验室, 广州 510535

作者简介: 马鹏程(1992-),男,硕士研究生,研究方向为环境毒理学及流行病与卫生统计学,E-mail:18841617618@163.com.

基金项目: 国家环保公益性行业科研专项(201309049)；广东省自然科学基金(2015A030313790,2015A030313863)


中图分类号: X171.5

Contamination Characteristics and Risk Assessment of Heavy Metals in Aquatic Species from Xingzi River of Northern Regions, Guangdong Province

Ma Pengcheng^1,2,3,
Chen Mianbiao^2,3,
Huang Chushan^2,3,
Hu Guocheng^2,3,
Li Liangzhong^2,3,
Wang Yuyu^2,3,
Peng Xiaowu^2,3,
Liu Xiaolin¹,
Zhang Lijuan^2,3
1. Jinzhou Medical University, Jinzhou 121000, China;
2. Center for Environmental Health Research, South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510535, China;
3. State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, Guangzhou 510535, China

CLC number: X171.5

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摘要:本文分析了粤北星子河12种水生生物样品中Cd、Cr、Cu、Pb、Ni和Zn等6种金属元素的含量水平。利用综合污染指数法和目标危害系数法对水生生物中重金属的污染特征及其健康风险进行评价。结果表明：不同水生生物对重金属的富集程度存在明显差异，重金属的含量水平从低到高顺序依次为：Cd关键词: 重金属/
水生生物/
污染特征/
健康风险评价

Abstract:The concentrations of 6 kinds of heavy metals, including Cd, Cr, Cu, Pb, Ni and Zn, were detected in the muscles of twelve aquatic species from northern Guangdong Province. Their contamination characteristics and health risk were assessed using comprehensive pollution index and target hazard quotient (THQ). The results showed that the concentrations of heavy metals varied in different aquatic species, and the concentration in increasing order was Cd and Unionidae than those in fish, and the concentrations of Cr, Pb, and Zn in Bellamya quadrata exceeded national food safety limits. The comprehensive pollution index indicated that Bellamya quadrata was seriously polluted, while fish showed no evidence of appreciable pollution. The TTHQ values of heavy metals for fish consumption were less than 1 and the estimated weekly intake (EWI) were lower than the provisional tolerable weekly intake (PTWI), indicating that consumption of fish species would not pose a risk to humans. However, the Bellamya quadrata consumption posed health risk to human, due to the high TTHQ values of combined heavy metals, and attention should be paid especially to the risk of Cr, Pb, and Zn.
Key words:heavy metals/
aquatic species/
contamination characteristics/
health risk assessment.