CAJ | 학술논문

初步评价了佛山市农村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．按照美国国家环保署（USEPA）推荐的方法，建立了水环境污染健康风险评价模型，并对佛山市A村的生活饮用水中砷（As）、铬（Cr6＋）、镉（Cd）、铅（Pb）、汞（Hg）和硒（Se）6种重金属通过饮水途径所引起的健康风险评价，做出初步评价．结果表明，上述6种重金属的总的健康风险为7.39×10-5·a-1，其中致癌物健康风险为7.39×10-5·a-1，非致癌有毒化学物健康风险为2.19×10-10·a-1，其中，在致癌污染物中Cr6＋是最主要的健康风险因素．水体中致癌重金属引起的健康风险的大小顺序为Cr6＋＞As＞Cd，非致癌重金属引起的健康风险的大小顺序Pb＞Hg＞Se．结果显示致癌重金属的健康风险值是非致癌物质的105倍，说明致癌物质对人体的危害远大于非致癌物质．致癌物质Cd、As、Cr6＋的健康风险平均值以Cr6＋最大．
초보평개료불산시농촌생활음용수원수중중금속오염물대인체건강산생적잠재위해．안조미국국가배보서（USEPA）추천적방법，건립료수배경오염건강풍험평개모형，병대불산시A촌적생활음용수중신（As）、락（Cr6＋）、력（Cd）、연（Pb）、홍（Hg）화서（Se）6충중금속통과음수도경소인기적건강풍험평개，주출초보평개．결과표명，상술6충중금속적총적건강풍험위7.39×10-5·a-1，기중치암물건강풍험위7.39×10-5·a-1，비치암유독화학물건강풍험위2.19×10-10·a-1，기중，재치암오염물중Cr6＋시최주요적건강풍험인소．수체중치암중금속인기적건강풍험적대소순서위Cr6＋＞As＞Cd，비치암중금속인기적건강풍험적대소순서Pb＞Hg＞Se．결과현시치암중금속적건강풍험치시비치암물질적105배，설명치암물질대인체적위해원대우비치암물질．치암물질Cd、As、Cr6＋적건강풍험평균치이Cr6＋최대．
The objective of present study is to evaluate the risk of human exposure to heavy metals via rural surface water source in Foshan City,Guangdong Province.Based on the concentration of heavy met-als including arsenic (As),chromium (Cr6+),cadmium (Cd),lead (Pb),mercury (Hg)and seleni-um (Se)in surface water,the carcinogenic and non-carcinogenic risk assessment were performed accord-ing to the method recommended by the United States environmental Protection Agency (US EPA).The results showed that the total health risk is 7.39 ×1 0 -5 ·a-1 ,the carcinogenic risk is 7.39 ×1 0 -5 ·a-1 , the non-carcinogenic risk is 2.1 9 ×1 0 -1 0 ·a-1 .In the carcinogenic pollutants,chromium (Cr6+)is the main health risk factor.The health risks caused by carcinogenic heavy metals in water were decreased as the order:Cr6+>As>Cd,and the risks by the non-carcinogenic heavy metals were decreased as the or-der:Pb>Hg>Se.It indicated that the health risk caused by the carcinogenic heavy metals is much lar-ger than that caused by the non-carcinogenic heavy metals,and the Cr6+,showed the greatest potential risk.