The detection method of the disinfection by-product dibromoacetonitrile (DBAN) was established by mean of liquid-liquid extraction and gas chromatograph (LLE-GC) method using aspartic acid as the precursor, and the DBAN formation mechanism and its influencing factors were also discussed. The results showed that the production of DBAN was little when the acidity was strong and the production of DBAN rapidly increased with the increase of pH when the pH value was in the range from 6 to 7, while the production of DBAN gradually decreased at the alkaline conditions. The impact of temperature on the formation was minor at 10~30degrees conditions. Bromide ion concentration was found an important influencing factor, the production of DBAN increased with the bromide ion concentration increasing. After the total 8steps of the process, such as substitution, decarboxylation and oxidation, the aspartic acid was finally formed into DBAN.
Plewa M J, Wagner E D, Jazwierska P, et al. Halonitromethane drinking water disinfection byproducts:Chemical characterization and mammalian cell cytotoxicity and genotoxicity[J]. Environ. Sci. Technol., 2004,38(1):62-68.
Hrudey S E.Chlorination disinfectionby-products, public health risk tradeoffs and me[J]. Water Research, 2009,43(8):2057-2092.
[5]
Richardson S D.Water analysis:emerging contaminants and current issuses[J]. Analytical Chemistry, 2009,81(12):4645-4647.
[6]
Onstad G D,Winberg H S,Kransner S W. Occurrence of halogenated furanones in US drinking waters[J]. Environmental Science & Technology, 2008,42(9):3341-3348.
[7]
Richardson S D. Formation and occurrence of disinfection by-products[J]. Environmental and Molecular Mutagenesis, 2008,49(7):531-538.
[8]
Bond T, Huang J, Templeton M R, et al. Occurrence and control of nitrogenous disinfection by-products in drinking water:A review[J]. Water Res., 2011,45(15):4341-4354.
[9]
Ueno H, Moto T, Sayato Y, et al. Disinfection by-products in the chlorinationo for rganic nitrogen compounds:by-products from kynurenine[J]. Chemosphere, 1996,33(8):1425-1433.
Westerhoff P, Chao P, Mash H. Reactivity of natural organic matter with aqueous chlorine and bromine[J]. Water Research, 2004,38(6):1502-1513.
[17]
Li Bo, Qu Jiuhui, Liu Huijuan,et al.Formation and distribution of disinfection by-products during chlorine disinfection in the presence of bromide ion[J]. Chinese Science Bulletin, 2008, 53(17):2717-2723.
[18]
Glezer V, Harris B, Tal N, et al. Hydrolysis of haloacetonitriles free energy relationship, kinetics and products[J]. Water Research, 1999,33(8):1938-1948.
[19]
Nikolaou A D, Golfinopoulos S K, Kostopoulou M N, et al. Decomposition of dihaloacetonitriles in water solutions and fortified drinking water samples[J]. Chemosphere, 2000,41(8):1149-1154.
[20]
孙媛媛.预氯化对溴代消毒副产物的影响研究[D]. 天津:天津大学, 2014.
[21]
Gould J P,Fitchorn L E. Formation of brominated trihalomethane:extent and kinetics[C]//Water Chlorination:Environmental Impact and Health Effects.Ann Arbor:AnnArbor Science Press, 1983.
[22]
Hua Guanghui,Reckhow D A,Kim J. Effect of bromide and iodide ions on the formation and speciation of disinfection byproducts during chlorination[J]. Environmental Science & Technology, 2006,40(9):3050-3056.
[23]
NA C Z. Formation of cyanogens chloride from amino acids and its stability with free chlorine and chloramine[D]. Michigan:The university of Michigan, 2005.
[24]
Chu Wen-hai, Gao Nai-yun, Deng Yang. Formation of halo acetamides during chlorination of dissolved organic nitrogen aspartic acid[J]. Journal of Hazardous Materials, 2010,173:82-86.
Mitch W A, Krasner S W, Westerhoff P, et al. Occurrence and formation of nitrogenous disinfection by-products[M]. DENVER, CO:Water Research Foundation, 2009.
[27]
Thibaud H, De Laat J, Merlet N, et al. Chloropicrin formation in aqueous solution:effect of nitrites on precursors formation during the oxidation of organic compounds[J]. Water Research, 1987, 21(7):813-821.
[28]
Hu J, Song H, Addison J W, et al. Halonitromethane formation potentials in drinking waters[J]. Water Res., 2010,44(1):105-114.
