新三氮烯类星色剂DBKDAAN的合成及其与镉的显色反应研究  

Synthesis of a new triazene 4′-nitro-4-(2,4-dibromo6-carboxylben zendiazoamino)azobenzene(DBKDAAN)and its color reaction with cadmium

作　　者：韩秀玲[1] 吴斌才[1] 

机构地区：[1]华东师范大学化学系

出　　处：《化学试剂》1996年第4期229-231,248,共4页Chemical Reagents

摘　　要：合成了６个多取代的４′－硝基苯基重氮氨基偶氮苯类试剂。研究了它们与镉（Ⅱ）的显色反应。在表面活性剂ＴｒｉｔｏｎＸ－１００存在下６个试剂均有较高的反应灵敏度，其中以ＤＢＫＤＡＡＮ效果最好。对其与镉的显色反应进行了较为系统的研究，配合物的最大吸收峰为５８０ｎｍ，表观摩尔吸光系数为１．７４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。镉的浓度在０～６μｇ／２５ｍＬ之间符合比耳定律。In this paper,six multi-substituted 4′-nitrobenzene-diazoaminoazobenzene reagents have bee synthesized.The color reaction of these reagents withcadium have also been studied. In the presence of Triton X-100,all of these reagents have high sensitivity,of which DBKDAAN is the best one.Thus it has been studied more systematically.Its apparent molar absorptivity is 1.74×105L·mol-1·cm-1.Beer′S law is obeyed for 0～6μg of Cd(Ⅱ)in 25 mL of solution.

关 键 词：氨基偶氮苯 羧基苯基 偶氮苯 镉 分光光度法 

分 类 号：O614.242[理学—无机化学] O657.32[理学—化学]