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Comparative genotoxicity of water processed by three drinking water treatment plants with different water treatment procedures

引用

Frontiers of Environmental Science & Engineering 2020年第3期14卷 27-37页

作者： Ting Zhang Heze Liu Yiyuan Zhang Wenjun Sun Xiuwei Ao School of Environment Tsinghua UniversityBeijing 100084China

Advanced water treatment is commonly used to remove micropollutants such as pesticides,endocrine disrupting chemicals,and disinfection byproducts in modem drinking water treatment ***,little attention has been paid to the changes in the genotoxicity of substances remaining in the water following the different water treatment *** this study,samples were collected from three drinking water treatment plants with different treatment *** treated water from each process was analyzed and compared for genotoxicity and the formation of organic *** genotoxicity was evaluated by an umu test,and the acute and chronic toxicity was analyzed through ecological structure-activity relationship(ECOSAR).The results of the umu test indicated that biological activated carbon reduced the genotoxicity by 38%,77%,and 46%in the three drinking water treatment plants,respectively,while chlorination increased the *** chromatograph-mass spectrometry analysis revealed that halogenated hydrocarbons and aromatic compounds were major contributors to *** results of ECOSAR were not consistent with those of the umu ***,we conclude that genotoxicity cannot be determined using ECOSAR.

关键词： Drinking water Treatment process Genotoxicity Umu test ecological structure-activity relationship

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