硝基苯偶氮-8-氨基喹啉的合成及其分析应用  

Synthesis of nitrophenylazo-8-aminoquinoline derivatives and their applications in analytical chemistry

作　　者：赵建为 徐其亨[2] 陈云超 

机构地区：[1]昆明冶金研究所,昆明650011 [2]云南大学化学系,昆明650091 [3]国营春城香料厂,昆明650215

出　　处：《化学试剂》1993年第5期270-273,共4页Chemical Reagents

摘　　要：合成了2-、3-、4-3种硝基苯偶氮-8-氨基喹啉(o-NPAQ,m-NPAQ,p-NPAQ)新试剂。探讨了其与金属离子的显色反应和荧光反应。在 Tween-40存在下,pH10.5的硼砂缓冲溶液中,p-NPAQ 与钴(Ⅱ)形成1:2的紫红色配合物,其最大吸收峰位于650nm,摩尔吸光系数为7.1×10~4L·mol^(-1)·cm^(-1)。钴量在0～20μg/25mL 范围内符合比尔定律。测定了实际样品中的微量钴,结果满意。Three nitrophenylazo-8-aminoquinoline (NPAQ) reagents were synthesized.They are o-NPAQ,m-NPAQ and p-NPAQ.Their colour and fluorescence reactions with metal ions were investigated.A method for the spec- trophotometric determination of cobalt(Ⅱ) with p-NPAQ has been developed.In the presence of Tween-40,p-NPAQ reacts with cobalt(Ⅱ) in the medium of pH 10.5 to form an 1:2 violet- red complex,exhibiting maximum absorbance at 650nm,its molar absorptivity was found to be 7.1×10~4L·mol^(-1)·cm^(-1).Beer's law is obeyed in the concentration range of 0～20μg/25mL of cobalt. The method has been applied to the determination of micro amounts of cobalt in real samples.

关 键 词：氨基喹啉 合成 分光光度法 

分 类 号：O657.3[理学—分析化学]