广西科学2016，Vol.23Issue(5)：478-484,7.DOI:10.13656/j.cnki.gxkx.20161121.009
龙江河水体重金属污染状况及健康风险评价
Assessment on the Status and Health Risks of Heavy Metal Pollutions of Longj iang River
摘要
Abstract
[Objective]The purpose of this research is to investigate the quality of the water body of the Longj iang River in Guangxi.Concentrations of heavy metals As,Cd,Zn,Pb and Cu in the water surface of Longjiang River were analyzed to figure out the distribution characteristics of heavy metal pollutants in this area.[Methods]The Nemero comprehensive index method and the health risk assessment model were adopted to evaluate the grade of water quality of Longjiang River and the health risk level imposed by heavy metals in the water.[Results]The concentrations of heavy metals in each sampling point conform to grade Ⅱ according to water quality standards.The water samples collected on 1 3 sampling points of the Longj iang River are clean and not polluted by heavy metals.The health risk values of heavy metals As and Zn are greater than that of Cd,Pb,and Cu in the Longjiang River,but still lower than the maxi-mum acceptable risk level of 5.0 × 10-5 a-1 .[Conclusion]The disciplinarian of the heavy metals distribution in the Longjiang River reveals that the downstream of the river possessed slightly higher values than the upstream,which is consistent per the comprehensive pollution index and the health risk value.As is the maj or pol-lutant of the health risk of Longjiang River,and it should be regarded as the key object of envi-ronmental risk management of Longj iang River.关键词
龙江河/重金属/内梅罗指数法/健康风险评价Key words
Longjiang River/heavy metals/Nemero comprehensive index method/health risks分类
资源环境引用本文复制引用
卢秋,邓渠成,卢苇,黄勇,邓超冰,王晓飞,王云龙..龙江河水体重金属污染状况及健康风险评价[J].广西科学,2016,23(5):478-484,7.基金项目
广西自然科学基金重大项目“西江流域水环境重金属污染机制与调控”(2013GXNSFEA053001)资助。 （2013GXNSFEA053001）
