5-(2-苯并噻唑偶氮)-8-氨基喹啉作为镍的光度分析试剂及应用研究  

5-(2-BENZOTHIAZOLEAZO)-8-AMINOQUINOLINE AS A SENSITIVE REAGENT FOR THE PHOTOMETRIC DETERMINATION OF NICKEL

作　　者：赵书林[1] 查丹明[1] 蒋毅民[1] 

机构地区：[1]广西师范大学化学化工系,桂林541004

出　　处：《理化检验（化学分册）》2001年第1期17-18,20,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：广西自然科学基金

摘　　要：研究了新试剂 5- (2 -苯并噻唑偶氮 ) - 8-氨基喹啉与镍的显色反应。在弱碱性介质中 ,阳离子表面活性剂溴化十六烷基三甲基铵存在下 ,试剂与镍形成 3∶ 1的蓝色配合物 ,其最大吸收波长位于 61 0 nm处 ,表观摩尔吸光系数为 1 .2 6× 1 0 5L· mol-1· cm-1,镍的浓度在 0～ 8.0μg/2 5ml范围内 ,符合比耳定律。应用于铝合金中微量镍的测定 ,获得了满意的结果。A highly sensitive photometric method for determination of nickel by the new chromogenic reagent 5 (2 benzothiazoleazo) 8 aminoquinoline (BTAQ) was proposed. In the presence of CTMAB and borax buffer solution, nickel forms a blue complex with BTAQ which has an absorption maxima at 610nm. The apparent molar absorptivity is 1.26×10 5L·mol -1 ·cm -1 . Beer′s law is obeyed for nickel in the concentration range of 0~8.0μg per 25ml of solution. The method has been applied to the determination of nickel in aluminum alloy. The proposed method is simple, rapid and accurate.

关 键 词：吸光光度法 5-(2-苯并噻唑偶氮)-8-氨基喹啉 镍 铝合金 微量分析 光度分析试剂 

分 类 号：TG115.33[金属学及工艺—物理冶金] O626[金属学及工艺—金属学]