【摘要】 宝鸡市饮用水源地包括冯家山水库、清姜河及部分井水。为全面掌握宝鸡市饮用水源地水质安全状况,对宝鸡市水源地饮用水中重金属进行含量检测及健康风险评价。结果表明:宝鸡市主要水源地饮用水中重金属含量在国家标准限值范围内,但宝鸡市各主要饮用水源地水均出现Pb浓度最大值超标、均值(井水、清姜河及冯家山水库分别为35、43. 92、47μg/L)接近国家标准的情况;宝鸡市水源地饮用水致癌风险在4. 75×10-4～6. 84×10-4之间,非致癌风险在1. 05×10-7～3. 25×10-7之间,重金属元素致癌风险值大小顺序为Cr> As> Cd> Ni;宝鸡市水源地饮用水对儿童健康风险略大于成人健康风险,应引起重视;宝鸡市水源地饮用水健康风险呈现出井水>清姜河河水>冯家山水库水的空间分布状态。宝鸡市各水源地饮用水水质达标,但存在致癌健康风险,其中Cr是主要风险因子。更多还原

【Abstract】 Baoji City ’s drinking water sources include Fengjiashan Reservoir,Qingjiang River and some wells. In order to fully grasp the water quality safety status of drinking water sources in Baoji City,the content and health risk assessment of drinking water from heavy metals in water sources were carried out. The results showed that: the content of heavy metals in drinking water of major water sources in Baoji City was within the limits of the national standards,but the maximum Pb concentration exceeded in the major drinking water sources in Baoji City. The mean value( well water,Qingjiang River,and Fengjiashan Reservoir was 35,43. 92,47 μg/L) were close to the national standards. The risk index of drinking water in drinking water sources in Baoji City was between 4. 75 × 10-4 and 6. 84 × 10-4,and the non-carcinogenic risk was between 1. 05 × 10-7 and 3. 25 × 10-7. The order of the carcinogenic risk caused by heavy metals was Cr > As > Cd > Ni,the water quality of children in major drinking water sources in Baoji City was slightly greater than the risk of adult health and should be taken seriously. The health risks of major drinking water sources in Baoji City showed that the spatial distribution pattern of well water > Qingjiang River water >Fengjiashan Reservoir water. The water quality of drinking water sources in Baoji City met the standard,but the health risk risk exceeded the threshold recommended by the relevant international organizations,and the risk of cancer-causing health was the main one,among which Cr was the main risk factor.更多还原