title: [Relationship between dissolved organic carbon and DBP in the Pearl River water].
abstract: Dissolved organic carbon (DOC) in the Pearl River system in Guangdong Province was fractioned by using XAD resins into humic substances and other fractions. The concentration and distribution of DOC, SUVA254, trihalomethanes formation potential (THMFP) and relationships between DOC and THMFP were analyzed. The 2-year study demonstrated that the DOC concentration of Pearl River ranged from 0.7 to 33.0 mg x L (-1). On the other hand, the trihalomethanes formation potential (THMFP) in Pearl River was 30.39-1 091.52 microg x L(-1), which showd a linear relationship with the DOC concentration. Spatially, the DOC concentration and THMFP increased downstream along each tributary; however, the humic substances mitigated to the opposite. During the chlorination, humic substances were the main precursors of disinfection by-products (generating 64.6% of THM) in Pearl River and the specific trihalomethanes formation potential (STHMFP) of humic substances was over 2 times higher as the other fractions. In addition, SUVA254 was proved to provide a reference indicator in testing the precursors of disinfection by-products.
authors.affiliation: College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China. bruce.1986@live.cn
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: He
authors.forename: Da-Cheng
authors.initials: DC
authors.lastname: Zhou
authors.forename: Bao-Qiang
authors.initials: BQ
authors.lastname: Wang
authors.forename: Yan-Hong
authors.initials: YH
authors.lastname: Liang
mesh_terms: D002244:Carbon / Q000032:analysis*; D002681:China; D002713:Chlorine / Q000737:chemistry; D004203:Disinfection; D006812:Humic Substances / Q000032:analysis; D009930:Organic Chemicals / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012995:Solubility; D022882:Trihalomethanes / Q000032:analysis* / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification; D014881:Water Supply
chemical_list: D006812:Humic Substances; D009930:Organic Chemicals; D022882:Trihalomethanes; D014874:Water Pollutants, Chemical; D002713:Chlorine; D002244:Carbon