摘要
为摸清某市长江源水及其饮用水中有机物的污染现状，应用ＧＣ／ＭＳ分析技术和Ａｍｅｓ试验、微核试验检测了Ｎ市２家水厂水样有机浓集物的非挥发性有机物及致突变性。结果表明，源水、出厂水共检出非挥发性有机物４３种，致突变性大小的顺序依次为出厂水＞末梢水＞源水＞滤池出水。试验表明，源水已受到有机诱变物的污染，混凝沉淀具有去除有机物、降低源水诱变性的作用，加氯消毒使饮用水的诱变活性增高，并产生多种类型诱变物，其中使ＴＡ９８菌株移码型突变性增强，且使ＴＡ１００菌株发生碱基置换型突变。结果提示，自来水中致突变物部分来自源水，但更主要系氯化消毒所产生的卤代反应。
Identification of non-volatile organic chemicals and study of mutagenicity of organic concentracts in water sample from two water plants in N city were carried out by using GC/MS analytical technique,Ames test and micronucleus test.The results showed that 43 kinds of non-volatile organic chemicals in water sample were identificated and that the order of mutagenic intenisity was as following:chlorinated water >water of distribution network>source water>water of clarifying filtrationTests showed that source water was contaminated by organic mutagensAfter coagulation and precipitation matagenicity of source water decreased,because some mutagenic organic chemicals could be removedChlorination increased mutagenicity of tap water and created the different kinds of mutagenFor example,frame-shift mutation to TA98 was stronger,Furthermore,base-substitution mutation to TA100 was foundThese results suggested that mutagens in tap water partly came from source water,but main mutagen was the products of halogenous reaction caused by chlorination
出处
《环境与健康杂志》
CAS
CSSCI
CSCD
北大核心
1998年第3期116-119,共4页
Journal of Environment and Health
