显色剂5,7-二氯[杯(4)芳烃偶氮]氨基喹啉的合成及与镍显色反应的研究  

STUDY ON THE SYNTHESIS OF 5,7-DICHLORO[CALIX(4)ARENEAZO] AMINOQUINOLINE AND ITS COLOUR REACTION WITH NICKEL(Ⅱ)-ION

作　　者：黄章杰[1] 程雪斌[1] 

机构地区：[1]云南大学化学系

出　　处：《理化检验（化学分册）》2006年第6期448-450,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：云南省自然科学基金重点项目(2005E0003Z);云南省教育厅科学研究基金项目(5Z0103A)

摘　　要：合成了试剂5，7-二氯[杯（4）芳烃偶氮]氨基喹啉（CCAQ），研究了该试剂与镍（Ⅱ）的显色反应的适宜条件，在pH10．8的缓冲介质中，在混合表面活性剂吐温40和CTMAB存在下，试剂与镍（Ⅱ）生成1：1稳定配合物，体系至少可稳定8h，λmax=620nm，ε=1．83×10^5L·mol^-1·cm^-1，镍（Ⅱ）浓度在0．1～8μg／25mL范围内服从比耳定律。方法已用于铝合金中镍（Ⅱ）的测定，RSD小于3．5％，回收率为98％～101％。The new reagent named 5, 7-dichloro[calix （4） areneazo] aminoquinoline （ abbreviated as CCAQ） was synthesized and its molecular structure characterized by IR-spectrometry and elementary analysis. It was found that in a borate buffer medium of pH 10. 8 and in the presence of Tween-40 and CTMAB, a stable complex having its mole ratio of 1 to 1 was formed between CCAQ and Ni（ Ⅱ ）, with its absorption maxima at the wavelength of 620 nm. The molar absorptivity of the complex was found to be 1.83 × 10^5L · mol^-1 · cm^-1. Beer＇s law was obeyed in the range of 0. 1-8. 0 μg of Ni（ Ⅱ ） per 25 mL of solution. The absorbance of the colored complex in the medium of the reaction system was kept stable for at least 8 h. In its application to the analysis of aluminum alloys, RSD＇s found from the analytical results were less than 3.5%, and the recoveries were in the range of 98 %- 101%.

关 键 词：光度法 5 7-二氯[杯(4)芳烃偶氮]氨基喹啉 镍 铝合金 

分 类 号：O657.3[理学—分析化学]