济宁市区自来水重金属检测与健康风险评价

目的检测济宁市15个居民区210份自来水样中铅、镉、铜、锌、锰的浓度,并做健康风险评价。方法采用原子吸收光谱法测定水样中五种元素含量,应用美国环保局推荐的健康风险评价模型对各元素引起的健康风险做了初步评价。结果济宁市15个居民区自来水中铅、镉、铜、锌、锰的质量浓度范围分别为1.08~18.1μg/L,0.017~0.083μg/L,0.024~0.049 mg/L,0.083~0.535 mg/L,2.05~6.04μg/L,五种元素通过饮水途径所致的健康风险在10-9/a~10-8/a之间,远低于国际辐射防护委员会（ICRP）推荐的通过饮水途径最大可接受风险水平（5×10-5/a）。结论济宁市区自来水中铅、镉、铜、锌、锰不会对人群引起健康危害。

Determination and preliminary health risk assessment of heavy metals in Jining tap water

Objective Concentration distribution and health risk assessment of the Pb,Cd,Cu,Zn,Mn in tap water in the 15 communities districts in Jining were studied based on a total of 210 random samples.Methods Concentration distribution of the Pb,Cd,Cu,Zn,Mn in tap water were determined by AAS and health risks associated with 5 metals in tap water were assessed using USEPA health risk assessment model.Results The concentrations of the heavy metals in tap water in Jining ranged from 1.08～18.1 μg/L for Pb,0.017～0.083 μg/L for Cd,0.024～0.049mg/L for Cu,0.083～0.535 mg/L for Zn,2.05～6.04 μg/L for Mn.The health risk levels ranged from 10-9/a to 10-8/a,much lower than the maximum allowance levels recommended by ICRP.Conclusion No risk can be caused by Pb,Cd,Cu,Zn,Mn in tap water for people in Jining.