title: [Chlorination byproducts formation potentials of typical nitrogenous organic compounds in water].
abstract: Twelve typical nitrogenous organic compounds including herbicides, pesticides, amino acids, industrial products etc in polluted raw water were selected to investigate formation of typical carbonaceous and nitrogenous DBPs during chlorination and chloramination. To indentify the formation mechanism of carbonaceous and nitrogenous disinfection byproducts from nitrogenous chemicals, chlorination and chloroamination of urea herbicides, triazine herbicides, amino acid, and other compounds were investigated. As a result, the potential precursors for different DBPs were defined as well. It has been identified that widely used urea herbicides could produce as many as 9 specific DBPs. The chlorotoluron shows highest reactivity and yields chloroform (CF), monochloroacetic acid (MCAA), dichloroacetic acid (DCAA), 1,1-dichloro-acetone (1,1-DCP), 1,1,1-trichloro-acetone (1,1,1-TCP), chloropicrin (NTCM), dichloro-acetonitrile (DCAN), dimethylnitrosamine (NDMA). The results indicated that aldicarb and dinoseb are important precursors of CF, DCAA, MCAA, NTCM as well. High concentrations of CF and DCAA were found during L-tryptophan chlorination. Furthermore, DBPs formation pathways and mechanisms were suggested during chlorination and chloramination of chlorotoluron, ametryn, dinoseb L-tryptophan.
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, Tongji University, Shanghai 200092, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Xu
authors.forename: Bin
authors.initials: B
authors.lastname: Xu
authors.forename: Cao
authors.initials: C
authors.lastname: Qin
authors.forename: Sheng-Ji
authors.initials: SJ
authors.lastname: Xia
authors.forename: Nai-Yun
authors.initials: NY
authors.lastname: Gao
authors.forename: Fu-Xiang
authors.initials: FX
authors.lastname: Tian
authors.forename: Da-Peng
authors.initials: DP
authors.lastname: Li
mesh_terms: D000085:Acetates / Q000032:analysis; D002713:Chlorine / Q000737:chemistry*; D002725:Chloroform / Q000032:analysis; D003999:Dichloroacetic Acid / Q000032:analysis; D004202:Disinfectants / Q000737:chemistry*; D004203:Disinfection / Q000379:methods*; D054879:Halogenation; D017672:Nitrogen Compounds / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods
chemical_list: D000085:Acetates; D004202:Disinfectants; D017672:Nitrogen Compounds; D014874:Water Pollutants, Chemical; D002713:Chlorine; C006972:chloroacetic acid; D002725:Chloroform; D003999:Dichloroacetic Acid