摘要
本文以2017年—2020年渝北区饮用水监测数据为基础,采用单因子评价法、内梅罗综合指数法和健康风险评价模型对饮用水水质类别、水质等级和健康风险水平进行了评价。结果表明:渝北区饮用水源水质均满足地表水或地下水Ⅲ类水质标准的要求,水质为清洁;地表水中Hg单项污染指数较高,而地下水中Mn单项污染指数较高;渝北区饮用水通过饮水途径所致健康危害风险值均低于美国环保局(USEPA)和国际辐射防护委员会(ICRP)的最大可接受风险水平;化学致癌物的健康风险值远超过非致癌物,占个人年总健康风险值的99.95%;2017年—2020年,渝北区饮用水各污染有害物质危害的个人年总风险年度变化总体比较稳定,等级为Ⅱ级,低-中风险状态;饮用水中致癌物六价铬和As应作为优先控制污染物,非致癌物中应特别重视氟化物的危害。
Based on the drinking water monitoring data in Yubei District from 2017 to 2020,the water quality category,water quality grade,and health risk level of drinking water were evaluated by using the single factor evaluation method,Nemero index method,and health risk analysis model.The results showed that the drinking water sources in Yubei District met the requirements of surface water or groundwater Class Ⅲ quality standards,and the water quality was clean.The single pollution index of Hg in the surface water was higher,while the single pollution index of Mn in the groundwater was higher.The health risk of drinking water in Yubei District was lower than that in the maximum acceptable risk level recommended by U.S.Environmental Protection Agency(USEPA)and the International Commission on Radiological Protection(ICRP).The health risk caused by the chemical carcinogens in the drinking water was much higher than that of the non-carcinogens,accounting for 99.95%of the total risk.The annual change of the total personal annual risk of drinking water pollutants in Yubei District was relatively stable,with grade Ⅱand low-medium risk from 2017 to 2020.Cr(Ⅵ)and As in drinking water should be emphatically monitored as the priority pollutants.For the non-carcinogens,the harm of fluoride should be paid special attention to.
作者
李小红
刘正实
刘成伦
LI Xiaohong;LIU Zhengshi;LIU Chenglun(National Research Base of Intelligent Manufacturing Service,Chongqing Technology and Business University,Chongqing 400067,China;Yubei District of Chongqing Ecological Environment Monitoring Station,Chongqing 401120,China;College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China)
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2022年第6期51-57,共7页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
重庆工商大学科研平台开放项目(KFJJ2019054)
关键词
饮用水源
健康风险评价
内梅罗指数
渝北区
Drinking water sources
Health risk assessment
Nemero index
Yubei District
作者简介
李小红(1983—),女,硕士研究生,助理研究员,主要从事环境污染控制与理论方面的研究;通信作者:刘正实,E-mail:409204752@qq.com
