台湾地区饮用氯化饮用水中三卤甲烷潜在终生癌症风险评估。
Estimation of potential lifetime cancer risks for trihalomethanes from consuming chlorinated drinking water in Taiwan.
作者信息
Hsu C H, Jeng W L, Chang R M, Chien L C, Han B C
机构信息
School of Public Health, Taipei Medical University, 250 Wu-Hsing Street, Taipei, Taiwan, Republic of China.
出版信息
Environ Res. 2001 Feb;85(2):77-82. doi: 10.1006/enrs.2000.4102.
Data on concentrations of trihalomethanes (THMs) in raw and chlorinated water collected from three water treatment plants in Taiwan and estimates of the lifetime cancer risk for THMs from drinking water, using age-adjusted factors and volatilization terms, are presented. Data on THM levels in drinking water were obtained from the annual reports of the Environmental Protection Administration (EPA) of Taiwan. The methodology for estimation of lifetime cancer risks was taken from the USEPA. Chloroform was the major species of THMs, especially in the water plant of south Taiwan. Chloroform contributed the majority of the lifetime cancer risks (range: 87.5-92.5%) of total risks from the three water supply areas. All lifetime cancer risks for CHCl(3), CHBrCl(2), CHBr2Cl, and CHBr3 from consuming tap water in the three water supply areas were higher than 10(-6). The sum of lifetime cancer risks for CHCl(3), CHBrCl(3), CHBr2Cl, and CHBr3 was highest (total risk for total THMs<1.94x10(-4)) for tap water from south Taiwan.
本文呈现了台湾三个水处理厂采集的原水和氯化水中三卤甲烷（THMs）的浓度数据，以及使用年龄调整因子和挥发项估算饮用水中THMs的终生癌症风险。饮用水中THM水平的数据来自台湾环境保护局（EPA）的年度报告。终生癌症风险的估算方法取自美国环境保护局（USEPA）。氯仿是THMs的主要成分，特别是在台湾南部的水厂。氯仿占三个供水区总风险中终生癌症风险的大部分（范围：87.5 - 92.5%）。三个供水区饮用自来水摄入CHCl(3)、CHBrCl(2)、CHBr2Cl和CHBr3的所有终生癌症风险均高于10^(-6)。台湾南部自来水的CHCl(3)、CHBrCl(3)、CHBr2Cl和CHBr3终生癌症风险总和最高（总THMs的总风险<1.94x10^(-4)）。
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