Photodegradation of N-nitrosodiethylamine in water with UV irradiation  

作　　者：XU BingBing CHEN ZhongLin QI Fei YANG Lei 

机构地区：[1]State Key Laboratory of Urban Water Resource and Environment, School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

出　　处：《Chinese Science Bulletin》2008年第21期3395-3401,共7页

基　　金：the National Natural Science Foundation of China (Grant No. 50578052);the National High Technology Research and Development Program of China (Grant No.2007AA06Z339)

摘　　要：The direct photolysis of N-nitrosodiethylamine(NDEA) in water with ultraviolet(UV) irradiation was investigated.Results showed that NDEA could be completely degraded under the direct UV irradiation.The effects of the experimental conditions,including the initial concentration of NDEA,humic acid and solution pH,were studied.The degradation products of NDEA were identified and quantified with gas chromatography-mass spectrometry(GC-MS) and high performance liquid chromatography(HPLC).It was confirmed that methylamine(MA),dimethylamine(DMA),ethylamine(EA),diethylamine(DEA),NO2-and NO3-were the main degradation products.The photolysis degradation mechanism of NDEA was also discussed.As a result of N-N bond fission,NDEA was degraded by direct UV irradiation.The direct photolysis of N-nitrosodiethylamine （NDEA） in water with ultraviolet （UV） irradiation was investigated. Results showed that NDEA could be completely degraded under the direct UV irradiation. The effects of the experimental conditions, including the initial concentration of NDEA, humic acid and solution pH, were studied. The degradation products of NDEA were identified and quantified with gas chromatography-mass spectrometry （GC-MS） and high performance liquid chromatography （HPLC）. It was confirmed that methylamine （MA）, dimethylamine （DMA）, ethylamine （EA）, diethylamine （DEA）, NO2^- and NO3^- were the main degradation products. The photolysis degradation mechanism of NDEA was also discussed. As a result of N-N bond fission, NDEA was degraded by direct UV irradiation.

关 键 词：N-亚硝基二乙基苯胺 照射时间 二乙胺 化学 光线照射 

分 类 号：P44[天文地球—大气科学及气象学]