新显色剂对溴苯基重氮氨基偶氮苯与镍显色反应的研究及应用  

Study on the Color Reaction of Nickel with a New Chromogenic Reagent Parabromobenzenediazoaminoazobenzene and Its Application

作　　者：孙登明[1] 杜雪梅[1] 

机构地区：[1]淮北煤炭师范学院化学系

出　　处：《光谱实验室》1995年第2期32-35,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：煤炭青年科学基金

摘　　要：本文研究了新显色剂对溴苯基重氮氨基偶氮苯与镍的显色反应。在非离子表面活性剂ＯＰ存在下，于ｐＨ９．６的硼砂－氢氧化钠介质中，镍与该试剂形成１：３稳定的红色配合物，其最大吸收波长位于５４０ｎｍ处，表现摩尔吸光系数ε＝９．０×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，镍量在０－１１μｇ／２５ｍＬ范围内符合比尔定律。用于铝合金中微量镍的测定，结果满意。The color reaction of nickel with parabromobenzenediazoaminoazobenzene has been studied in this paper. In borax-sodium hydrate buffer at pH9. 6, nickel reacts with the reagent to form a stable red complex in the presence of OP with the molar ratio of 1 : 3. The maximum absorption of the complex is at 540nm and molar absorptivity is 9. 0×10￣4 L · mol￣(-1) . cm￣(-1). Beer's taw is obeyed for 0- 11μg/25mL. The method is applied to determination of nickel in aluminium alloys with satisfactory results.

关 键 词：分光光度法 镍 对溴苯基重氮氨基偶氮苯 铝合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程] O614.813[金属学及工艺—金属材料]