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地球学报  2010 

某储油库地下水有机污染健康风险评价

DOI: 10.3975/cagsb.2010.02.17

Keywords: 健康风险评价,地下水,有机污染,储油库

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Abstract:

本文以USEPA推荐使用的污染场地健康风险评价方法为基础,结合污染场地实际情况,分析、评价了某储油库地下水有机污染对场址内暴露人群造成的健康风险。评价结果表明:该储油库地下水有机污染物为1,2-二氯乙烷、苯、三氯甲烷和甲苯。污染场址内的工人和居民受到的非致癌风险均小于1,在可接受范围;而污染对场址内的工人和居民产生的致癌风险较大,分别为1.7×10?4、9.0×10?3,是不可接受的。产生致癌风险的主要污染物为1,2-二氯乙烷,占总致癌风险的99.80%,可致人产生多种形态的肿瘤,并具有潜在的遗传毒性。主要暴露途径是吸入吸收,占总致癌风险比例大于70%,其次为口入吸收。皮肤接触暴露途径产生的致癌风险较小,占总致癌风险比例小于1%。

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