表面活性剂的电喷雾质谱分析  

Analysis of Surfactants by Electrospray Ionization Mass Spectrometry

作　　者：杨成对[1] 宋莉晖[1] 张焱[2] 

机构地区：[1]清华大学化学系,北京100084 [2]河南科技学院,河南新乡453003

出　　处：《分析测试学报》2008年第10期1118-1120,共3页Journal of Instrumental Analysis

摘　　要：采用不同的质谱采集模式分析了不同类型的表面活性剂。阳离子表面活性剂如氯化十二烷基二甲基苄基铵,适合正离子采集模式,准分子离子为其阳离子;阴离子表面活性剂如十二烷基苯磺酸钠,适合负离子采集模式,准分子离子为其阴离子;两性表面活性剂如氧化十四烷基二甲基胺,适合负离子采集模式,准分子离子为[M-H]-;非离子表面活性剂如壬基酚聚氧乙烯(12)醚,适合正离子采集模式,准分子离子为[M+Na]+。The various kinds of surfactants were analyzed by electrospray ionization mass spectrometry （ESI MS） with different scan modes. Cationic surfactants such as dodecyl dimethyl benzyl ammonium chloride were analyzed by positive scan mode and their quasi-molecular ions were their corresponding cations. Anionic surfactants such as sodium dodecylbenesulfonate were analyzed by negative scan mode and their quasi-molecular ions were their corresponding anions. Amphoteric surfactants such as dimethyl tetradecyl amine oxide were also analyzed by negative scan mode and their quasi-molecular ions were their corresponding hydrogen adducted ions [M-H]^-. Nonionic surfactants such as polyoxyethylene（12） nonyl phenyl ether（OPE-12） were using positive scan mode and their quasimolecular ions were their corresponding sodium adducted ions [M＋Na]^-.

关 键 词：阳离子表面活性剂 阴离子表面活性剂 两性表面活性剂 非离子表面活性剂 电喷雾质谱 

分 类 号：O657.63[理学—分析化学]