title: Bromine incorporation into five DBP classes upon chlorination of water with extremely low SUVA values.
abstract: The main objective of this study was to assess the effects of disinfection conditions on bromine incorporation into disinfection by-products (DBPs) during chlorination of water with low specific UV absorbance (SUVA). Five classes of DBPs were included: trihalomethanes (THMs), dihaloacetic acids (di-HAAs), trihaloacetic acids (tri-HAAs), dihaloacetonitriles (DHANs) and trihalonitromethanes (THNMs). Results showed that the bromine utilization in DBPs formation was positive related with reaction time, pH and temperature. On the other hand, the bromine substitution factors (BSFs) of DBPs were generally increased with pH (except tri-HAAs) and bromide concentration, but decreased with the reaction time, temperature and chlorine dose. Moreover, the BSFs values varied with DBP classes with the ranking being as following: THNMs≫DHANs≫tri-HAAs>THM≈di-HAAs. These results were mostly similar with the references, yet the pH effect on BSFs as well as the rank of BSFs for different DBP classes may differ with the specific UV absorbance of organic matter.
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, P. R. China. Electronic address: huachang2002@163.com.
authors.forename: Huachang
authors.initials: H
authors.lastname: Hong
authors.affiliation: Laboratory for Food Safety and Environmental Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen 518055, P. R. China. Electronic address: 550162224@qq.com.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Yan
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, P. R. China.
authors.forename: Xuhui
authors.initials: X
authors.lastname: Song
authors.affiliation: Shenzhen Polytechnic, Guangdong Province, Shenzhen 518055, P. R. China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Qin
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, P. R. China.
authors.forename: Hongjie
authors.initials: H
authors.lastname: Sun
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, P. R. China.
authors.forename: Hongjun
authors.initials: H
authors.lastname: Lin
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, P. R. China.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Chen
authors.affiliation: Laboratory for Food Safety and Environmental Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen 518055, P. R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liang
keywords: Bromine incorporation; Chlorination; Disinfection by-products (DBPs); Factor; Low specific UV absorbance (UVA)