陕西某地区饮用水中低浓度重金属的测定及健康风险评价

测定12种生活饮用水样本中的铁、锌、铜、铬、铅、镉6种重金属的浓度,并应用美国环保局推荐的健康风险评价模型对这12种水样中的重金属引起的健康风险做了初步评价。结果表明,在12种生活饮用水中,6种重金属的浓度分别为Fe(0.554 5~2.057 3)×10-4mg/L,Zn(0.002 7~0.455 4)mg/L,Cu(0.002 0~0.021 0)mg/L,Cr(0.001 6~0.010 0)mg/L,Pb(0.008 0~0.014 0)mg/L,Cd(5.217~12.17)×10-5mg/L,通过饮水途径所致健康风险中,4#样的健康风险最高2.13×10-4/a,11#样的健康风险最低2.5×10-6/a。

Determination of low concentration heavy metals of drinking water and health risk assessment in a region of Shaanxi province

The experiment determines six kinds of heavy metals including iron,zinc,copper,chrome,lead and cadmium from the twelve drinking water samples.Health risks associated with 6 metals in drinking water were assessed using USEPA health risk assessment model.The results showed that the concentrations of the heavy metals in drinking water Fe(0.554 5×10-4 ~ 2.057 3×10-4)mg/L,Zn(0.002 7 ~ 0.455 4)mg/L,Cu(0.002 0 ~ 0.021 0)mg/L,Cr(0.001 6 ~ 0.010 0)mg/L,Pb(0.008 0~ 0.014 0)mg/L and Cd(5.217 ~ 12.17)×10-5 mg/L.Among the health risks caused by drinking,the largest risk is the sample of 4 and the lowest risk is the sample of 11.