季胺盐型表面活性剂与镉试剂显色反应的研究及应用  

Chromogenic Reaction of Quaternary Ammonium Surfactants With 1- (4-Nitrophenyl ) -3- (4-phenylazophenyl ) triazene and Its Applications

作　　者：冯泳兰 

机构地区：[1]衡阳师范高等专科学校化学系,衡阳421008

出　　处：《分析化学》1998年第10期1209-1213,共5页Chinese Journal of Analytical Chemistry

基　　金：湖南省教育委员会资助项目

摘　　要：在三乙醇胺存在下，季铵盐型表面活性剂溴化十六烷基三甲铵（ＣＴＭＡＢ）、溴化十二烷基二甲基苄铵（ＤＤＭＢＡＢ）和溴化十六烷基吡啶（ＣＰＢ）分别与１－（４－硝基苯基）－３－［４－（苯基偶氮）苯基］－三氮烯（镉试剂，ＮＰＰＡＰＴ）形成离子缔合物显色，吸收光谱红移，离子缔合比：ＮＰ－ＰＡＰＴ与ＤＤＭＢＡＢ为１：２，与ＣＴＭＡＢ、ＣＰＢ均为１：３；测定了显色体系的ＣＴＭＡＢ、ＤＤＭＢＡＮ、ＣＰＢ的临界胶束浓度、符合比尔定律的范围、表观摩尔吸光系数；探讨了微量ＣＴＭＡＢ、ＤＤＭＢＡＢ和ＣＰＢ的测定方法，获得满意的结果。The l:3, 1: 2 and l:3 chromogenic complexes of ion association of 1 - (4- nitrophenyl) -3 - (4phenylaophenyl ) triazene (NPPAPT ) with cethyltrimethylammonium bromide bromide (CTMAB ), dodecyldimethybenzylammonium bromide(DDMBAB) and cetylpyridinium bromide(CPB) were formed, respectively,in the presence of triethanolamine.All absorption spectra of chromogenic systems occurred red shift. Based on these chromogenic reactions,the critical micella concentrations of CTMAB, DDMBAB and CPB can be determined.The range for the determination and apparent molar absorptivity were investigated,the possibility for the spectrophotometric determination of trace CTMAB,DDMBAB and CPB was discussed.

关 键 词：季胺盐型 表面活性剂 镉试剂 CTMAB DDMBAB CPB 

分 类 号：O647.2[理学—物理化学]