4,4'-对偶氮苯重氮氨基偶氮苯与溴化十六烷基三甲铵显色反应的研究及应用  

Study On Colour Reactions of 4,4'-Biozobenzenediazoaminoazobene with Cationic Surfactants and Its Application

作　　者：周能[1] 邓春丽 

机构地区：[1]玉林师范学院化学与生物系,副教授广西玉林537000 [2]西埌二中中学二级,广西北流537500

出　　处：《玉林师范学院学报》2005年第3期51-53,共3页Journal of Yulin Normal University

摘　　要：研究了三氮烯试剂4,4'-对偶氮苯重氮氨基偶氮苯(BBDAB)与阳离子表面活性剂溴化十六烷基三甲铵(CTMAB)的显色反应,并据此反应建立了分光光度测定CTMAB含量的新方法.在Tritonx-100的存在下,于pH=12.5的缓冲溶液中,BBDAB与阳离子表面活性剂形成1∶3蓝紫色稳定络合物,其最大吸收峰位于680nm处,线性范围是0-14.6mg/L,表观摩尔吸光系数达1.76×104L·mol-1·cm-1.该法用于合成水样中CTMAB的测定,结果令人满意.The reaction of 4,4＇- Biozobenediazoaminoazobene （BBDAB） with cetyltrimethylamrnonium bromide（CTMBA） has been studied, In pH 12,5 buffer solution, BBDAB can react with CTMBA to form a stable complex with the presence of TritionX-100.The molar ratio of the complex is 1：3 and the maximum absorption wavelength is at 680nm.Beers law is obeyed in the range of 0-14.6mg/L.The apparent molar absorptivity is 1.76×10^4L·mol^-1·cm^-1.This method has been applied to the determination of CTMAB in the artificial water with satisfactory results.

关 键 词：4 4'-对偶氮苯氮重氮氨基偶氮苯 溴化十六烷基三甲铵 光度法 

分 类 号：O657.3[理学—分析化学]