郑州市饮用水源水环境健康风险评价

On environmental health risk assessment of drinking water resource in Zhengzhou City

为了解郑州市饮用水源水环境健康风险的状况,通过选取健康风险评价方法,对郑州市的饮用水环境健康风险进行了评价.结果表明：（1）郑州市地表饮用水和地下饮用水源基因毒物所产生的健康风险数量级为10-6~10-5a-1,躯体毒物的健康风险数量级为10-12~10-9a-1;（2）基因毒物为优先控制类,铬为饮用水源优先控制的基因毒物;（3）地表饮用水的优先控制的躯体毒物是氨,地下饮用水是铅;（4）郑州饮用水环境健康状况形势严峻,2001,2003和2006年饮用水源健康危害的个人年总风险略高于国际辐射防护委员会（ICRP）推荐的最大可能接受值,其余年份低于该值,超标率为33%.

This paper studied the water environment health risk,the purpose of which was to investigate the health situation of drinking water quality of Zhengzhou water supply sources.The results were as follows,（1） the health risk caused by gene toxic substances ranged from 10-6 to 10-5 a-1 and that caused by non-gene toxic substances ranged from 10-12 to 10-9 a-1,therefore,gene toxic substances were the pollutants of highest priority to be controlled;（2） for gene toxic substances,Cr was the highest priority pollutant in the 2 water supply sources;（3） for non-gene toxic substances,ammonia is the highest priority pollutant in the surface water supply sources and Pb is the highest priority pollutant in the groundwater supply sources;（4） the total health risk caused by all pollutants for the water supply sources was serious in Zhengzhou,as in 2001,2003 and 2006,the various pollutants of drinking water source caused by personal total risk of health hazard were slightly higher than the value recommended by ICRP,the rest year it was less than that value.