用对乙酰基苯重氮氨基偶氮苯分光光度法测定镍  

Determination of nickel by spectrophotometry with p-acetylbenzene diazoaminoazobenzene

作　　者：邝平先[1] 徐理阮[2] 

机构地区：[1]中国科学技术大学应用化学系,合肥230026 [2]北京轻工业学院化工系,北京100037

出　　处：《化学试剂》1991年第5期277-279,共3页Chemical Reagents

摘　　要：研究了在Triton X-100存在下对乙酰基苯重氮氨基偶氮苯与镍的显色反应。在pH 9.6～10.5的硼砂缓冲溶液中,镍与试剂形成稳定的有色配合物。镍含量在0～14μg/25 mL 范围内符合比耳定律。最大吸收波长498nm 处的表观摩尔吸光系数为1.60×10~5L·mol^(-1)·cm^(-1)。用于铝合金中镍的测定,结果满意。The colour reaction of p-acetylbenzene diazo-aminoazobenzene with nickel in the presenceof Triton X-100 has been studied.A stablecolour complex of nickel with the reagent isformed in borax buffer solution with pH 9.6～10.5.Beer's law is obeyed in the range of 0～14μg/25mL for nickel,and its apparent molarabsorptivity is 1.6×10~5L·mol^(-1)·cm^(-1) at the maxi-mum absorption wavelength 498nm.This methodhas been applied to the determination of nickelin aluminium alloy with satisfactory results.

关 键 词：镍 测定 分光光度法 重氮氨基苯 

分 类 号：O614.813[理学—无机化学]