Effect of Chloramine Disinfection on the Formation of Drinking Water Disinfection By-Products and Their Muta-genicity
- VernacularTitle:氯胺消毒对饮用水消毒副产物形成和致突变性的影响
- Author:
Zhengchang HENG
;
Chaohui LI
;
Weihua JIANG
- Publication Type:Journal Article
- Keywords:
Drinking water;
Chloramine;
Disinfection by-products;
Mutagenicity
- From:
Journal of Environment and Health
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the effect of chloramine disinfection on the formation of drinking water disinfection by-products(DBPs )and their mutagenicity.Methods The bacterial indices,chloroform and carbon tetrachloride content in the finished water samples using liquid chlorine and chloramine disinfection respectively were determined in August,2001(plentiful water season)and in March,2002(low water season).The mutagenicities of organic extracts from the water samples were tested using Ames test.The levels of DBPs and the mutagenic activities of water samples treated with different disinfection methods were compared.Results The total count of bateria and coliform bacteria were0/ml and0/L respectively at free chlorine con-centration of about 1mg /L in the chloraminated drinking water,which decreased81%-84%compared with those of the chlori-nated drinking water samples.The carbon tetrachloride concetration were all
