维普中文期刊产品整合服务

Body fluid analog chlorination:Application to the determination of disinfection byproduct formation kinetics in swimming pool water

查看全文 作　　者：Lucie [1,2]Tsamba;Nicolas [1]Cimetiere;Dominique [1]Wolbert;Olivier [2]Correc;Pierre Le [1]Cloirec 高影响力作者 机构地区：[1]Rennes University,ENSCR,CNRS,ISCR-UMR 6226,F-35000 Rennes,France;[2]Scientific and Technical Center for Buildings,11 rue Henri Picherit,BP 82341,44323 Nantes Cedex 3,France高影响力机构 出　　处：《Journal of Environmental Sciences》索引2020年第32卷第1期,共11页高影响力期刊 基　　金：the Conseil Régional de Bretagne for financial support 摘　　要：Disinfection by-products(DBPs)are formed in swimming pools by the reactions of bather inputs with the disinfectant.Although a wide range of molecules has been identified within DBPs,only few kinetic rates have been reported.This study investigates the kinetics of chlorine consumption,chloroform formation and dichloroacetonitrile formation caused by human releases.Since the flux and main components of human inputs have been determined and formalized through Body Fluid Analogs(BFAs),it is possible to model the DBPs formation kinetics by studying a limited number of precursor molecules.For each parameter the individual contributions of BFA components have been quantified and kinetic rates have been determined,based on reaction mechanisms proposed in the literature.With a molar consumption of 4 mol Cl2/mol,urea is confirmed as the major chlorine consumer in the BFA because of its high concentration in human releases.The higher reactivity of ammonia is however highlighted.Citric acid is responsible for most of the chloroform produced during BFA chlorination.Chloroform formation is relatively slow with a limiting rate constant determined at 5.50×10^-3 L/mol/sec.L-histidine is the only precursor for dichloroacetonitrile in the BFA.This DBP is rapidly formed and its degradation by hydrolysis and by reaction with hypochlorite shortens its lifetime in the basin.Reaction rates of dichloroacetonitrile formation by L-histidine chlorination have been established based on the latest chlorination mechanisms proposed.Moreover,this study shows that the reactivity toward chlorine differs whether L-histidine is isolated or mixed with BFA components. 关 键 词：Disinfection by-products Kinetic modeling Body fluid analog Swimming pools
相关文献

参考文献(51)

引证文献(5)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费