摘要
该文对S区珠江入海口断面水质中10种重金属和常规水质指标进行连续5 a(2015-2019年)调查研究,并应用美国环境保护署推荐的环境健康风险评价模型,对该流域内的水体经饮水途径造成的健康风险进行计算和评价。结果表明,该研究区域的金属致癌风险较高,其中最高的致癌风险来自于A断面中的砷,儿童约是成人的2倍,分别达到2.35×10-5 a-1和1.25×10-5a-1,接近ICRP推荐的可接受风险水平5.0×10-5 a-1;该区域金属致癌风险较低,均在可接受范围内。该区域金属污染物的优先控制顺序为砷>镉>铜>铅。
The concentrations of ten kinds of heavy metals and several regular water quality indexes in the Pearl river estuary were studied from the year of 2015 to 2019.Health risks associated with these heavy metals were assessed primarily using the environmental health risk assessment model recommended by USEPA.The results indicated that the metal carcinogenic risk is relatively high in this area.The highest carcinogenic risk was from As in A water section,Children were about twice as many as adults,with the risk for adult people reaching 1.25×10-5 a-1 and the risk of children reaching 2.35×10-5 a-1,which were very close to the International Commission on Radiological Protection(ICRP)recommended maximum acceptable level of risk.The non-carcinogenic risk levels were within the acceptable range.The primary control sequence of metal pollution in this area was As>Cd>Cu>Pb.
作者
陈爽
徐接胜
CHEN Shuang;XU Jiesheng(Guangdong Provincial Public Laboratory of Analysis and Testing Technology,Institute of Analysis,Guangdong Academy of Sciences(China National Analytical Center,Guangzhou),Guangzhou 510070,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第S02期235-242,共8页
Environmental Science & Technology
基金
广东省科学院青年科技工作者引导专项(2019GDASYL-0105010)
关键词
珠江
地表水
水文期
健康风险评价
Pearl River
surface water
hydrographic period
health risk assessment
