我国典型地区饮水中致突变性表征  

Characteristics in Mutagenicity of the Drinking Water from Representative Areas in China.

作　　者：徐凤丹[1] 范美云[1] 宋瑞霞[1] 张秀玲 周世伟[1] 齐顺[1] 

机构地区：[1]中国预防医学科学院环境卫生监测所

出　　处：《环境科学》1994年第3期1-6,共6页Environmental Science

基　　金：国家自然科学基金

摘　　要：报道上海、昆明、哈尔滨、沈阳、广州、武汉和深圳等城市自来水的致突变性特征，以及上述城市自来水厂源水及其氯化源水致突变性的比较研究。发现７城市自来水中均含有移码型直接致突变物。ＴＡ９８菌株是最敏感的监测菌株。另外，按水样比活性（ｒｅＶ／Ｌ）和浓集物比活性（ｒｅＶ／ｍｇ）为指标，则上海、昆明、哈尔滨、沈阳、广州和武汉等６城市自来水厂氯化源水对ＴＡ９８（Ｓ９）和ＴＡ１００（Ｓ９）２菌株的致突变性均明显地高于源水，上海市尤为突出。该结果也为研究饮水中氯化过程中有毒有机氯化物的生成机理而选择典型城市提供了科学依据。he tap waters,raw waters and chlorinated raw waters from the waterworks in Shanghai,Kunming,Harbin,Shengyang, Guangzhou, Wuhan and Shenzhen cities were studied for their characteristics in mutagenicity by using an Ames Test.All the tap waters were found to contain direct mutagens of frameshift, with strain TA98 to be the most sensitive strain for such a monitol'ing.The oh1Grinated raw waters from all the cities except for shenzhen were found to have significantly a stronger mutagenic activity than their raw waters in both strain TA98 and TA100,with and without Sg, as evaluated in terms of relative activity by water volume (rev./L)or by weight of water concentrate(rev./ mg ),particularly in the case of Shanghai.The results provide a scientific basis for selecting representative cities to study the mechanism on the formation of toxic chlorinated organics during chlorination of drinking water.

关 键 词：饮用水 氯化 致突变性 

分 类 号：R123.1[医药卫生—环境卫生学]