摘要
目的初步评价川藏沿线各兵站驻地生活饮用水源水中重金属污染物对人体健康产生的潜在危害。方法在对川藏沿线的18个兵站饮用水源水中砷(As)、铅(Pb)、汞(Hg)和硒(Se)4种重金属进行检测的基础上,建立水环境污染健康风险评价模型,并对重金属通过饮水途径所引起的健康风险作出初步评价。结果川藏沿线18个兵站水源水中As、Pb、Hg和Se的平均质量浓度分别为1.362×10-3mg/L、3.654×10-3mg/L、0.567×10-3mg/L和0.954×10-3mg/L。饮用水源水中致癌重金属As对人体健康危害的个人年风险为1.764×10-7/a^1.241×10-5/a;非致癌重金属Pb、Hg和Se所引起的健康危害的个人年风险水平集中在1×10-9/a^1×10-11/a,按风险大小排列为:As>Pb>Hg>Se。4种重金属对人体健康危害的年总风险达2.93×10-5/a。结论川藏沿线兵站4种重金属污染物对人体健康危害的个人年风险和总风险均低于国际辐射防护委员会(ICRP)推荐的最大可接受值5.0×10-5/a,但应引起部队管理部门的重视。
Objective To explore the potential health hazards of heavy metals contamination in drinking water from 18 different army service stations. Methods The water environmental health risk assessment model recommended by US. EPA was established based on the water monitoring data of heavy metals. Results The median concentration of heavy metals in drinking water was 1. 362 ×10^-3mg/L for As, 3. 654 ×10^-3mg/L for Pb, 0. 567 ×10^-3mg/L for Hg, and 0. 954 ×10^-3 mg/L for Se. The health risk to the individual person per year in terms of As through drinking water ranged from 1.764 ×10^-7/a to 1. 241 ×10^-5/a. The health risk of non-carcinogenic heavy metals （Pb, Hg, Se） to the individual person ranged from 1 ×10^-9/a to 1 ×10^-11/a, and the greatest health risk to the individual through drinking was As, followed by Pb, Hg and Se. The total health risk caused by 4 heavy metals was 2.93 ×10^-5/a. Conclusion Although the environ- mental health risks caused by 4 heavy metals were lower than the maximum tolerable value （5.0 ×10^-4/a） recommended by ICRP, it should be also paid more attention by the military management.
出处
《解放军预防医学杂志》
CAS
北大核心
2008年第5期321-324,共4页
Journal of Preventive Medicine of Chinese People's Liberation Army
关键词
川藏沿线
兵站
饮用水
重金属
健康风险评价
Sichuan.Tibet highway
army service stations
drinking water
heavy metal
health risk assessment
