文档介绍：消毒副产物总致癌风险的首要指标参数——卤乙酸
张晓健李爽
(清华大学环境科学与工程系,北京,100084)
摘要本文利用国际和国内饮用水中消毒副产物的一些有代表性的数据,计算了饮用水中各种消毒副
产物的致癌风险,并对结果进行处理分析。分析结果显示:(1)饮用水中三卤甲烷和卤乙酸浓度的相关性不
好(R2≤),说明不能从一类消毒副产物的浓度来推断另一类消毒副产物的浓度;(2)在饮用水消毒副产
物的总致癌风险中,卤乙酸的致癌风险占 %以上,三卤甲烷的致癌风险则在 %以下;(3)饮用水中卤
乙酸浓度与消毒副产物的总致癌风险之间相关性极好(R2≤)。综合以上三点,建议将饮用水中卤乙酸浓
度作为控制消毒副物物总致癌风险的首要指标参数。
关键词消毒副产物,三卤甲烷,卤乙酸,致癌风险
Haloacetic Acids as an Indicator of the Total Carcinogenic Risk Of Disinfection By-products
Zhang Xiaojian, Li Shuang
Department of Environmental Science and Engineering Of Tsinghua University,Beijing,100084
Abstract This article set up one method to calculate the carcinogenic risk of disinfection
byproducts(DBPs),and analyzed some representative DBPs data in drinking analyzing results showed
that:(1)poor correlation(R2≤)was found between trihalomethanes(THMs) and haloacetic acids(HAAs),and
predictions of one kind of DBPs based on another kind is not feasible;(2)the carcinogenic risk of DBPs(more than
percent);(3)a high correlation(R2≤)was found between HAAs concentration and the total carcinogenic
risks of ,it can be proposed that HAAs concentration in drinking water be used as an preferential
indicator of the total carcinogenic risks of DBPs.
Keywords disinfection by-products,trihalomethanes,haloacetic acids,carcinogenic risk
1. 前言中国