Formation and removal of genotoxic activity during UV/H2O2-GAC treatment of drinking water

被引：66

作者：

Heringa, M. B. ^{[1
]}

Harmsen, D. J. H. ^{[1
]}

Beerendonk, E. F. ^{[1
]}

Reus, A. A. ^{[2
]}

Krul, C. A. M. ^{[2
]}

Metz, D. H. ^{[3
]}

Ijpelaar, G. F. ^{[1
]}

机构：

[1] KWR Watercycle Res Inst, NL-3430 BB Nieuwegein, Netherlands

[2] TNO Qual Life, NL-3700 AJ Zeist, Netherlands

[3] Greater Cincinnati Water Works, Cincinnati, OH 45228 USA

来源：

WATER RESEARCH | 2011年 / 45卷 / 01期

关键词：

AOP; Genotoxicity; Oxidation; UV; Drinking water; Photolysis; SALMONELLA TESTER STRAINS; UV-IRRADIATION; BY-PRODUCTS; DISINFECTION; ASSAY; GROUNDWATER; CYTOTOXICITY; MUTAGENICITY; OXIDATION; DAMAGE;

D O I：

10.1016/j.watres.2010.08.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this study was to determine the genotoxic activity of water after UV/H2O2 oxidation and GAC filtration. Pre-treated surface water from three locations was treated with UV/H2O2 with medium pressure (MP) lamps and passed through granulated activated carbon (GAC). Samples taken before and after each treatment step were extracted and concentrated by solid phase extraction (SPE) and analyzed for genotoxicity using the Comet assay with HepG2 cells and the Ames II assay. The Comet assay showed no genotoxic response in any of the samples. in the Ames II, no genotoxic response was obtained with the TAMix (a mix of six strains), but the TA98 strain showed an increase in genotoxic activity after MP-UV/H2O2 for all three locations. GAC post treatment effectively reduced the activities to control levels at two of the three locations and to below the level of the pre-treated water at one site. The results indicate that UV/H2O2 treatment may lead to the formation of genotoxic by-products, which can be removed by subsequent GAC filtration. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：366 / 374

页数：9

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