摘要
首次合成了5-(苯基偶氮)-8-(苯基偶氮氨基)喹啉(PAPAQ)和5-(苯基偶氮)-8-(4-硝基苯基偶氮氨基)喹啉(PANPAQ)两个8-氨基喹啉双偶氮衍生物并经红外光谱和元素分析确证了其结构。建立了PAPAQ荧光法测定铜的新体系,其检测范围为0~80ppb,检测极限为0.5ppb。方法已用于实际样品中铜的测定,结果满意。
Two 8-aminoquinoline bisazo derivatives were synthesized. They are 5-phenylazo-8-(phenyldiazoamido) quinoline (PAPAQ) and 5-phenylazo-8-(4-nitro-phenyldiazoamido )quinoline (PANPAQ).The products.were confirmed by elemental analysis and infrared spectra.Their colour and fluorescence reactions with various metal ions were investigated,and it was found that PAPAQ is a good fluorimetric reagent for copper and cobalt,PANPAQ is a sensitive chromogenic reagent for copper,cobalt and nickel.A method for the fluorimetric determination of copper with PAPAQ was developed.The detection limit of 0.5 ppb and linearity range of 0-80 ppb were obtained.This method has been applied to determine trace copper in real samples with satisfactory results.
出处
《化学试剂》
CAS
CSCD
北大核心
1994年第4期199-202,共4页
Chemical Reagents
关键词
氨基喹啉
偶氮衍生物
合成
铜分析
aminoquinoline bisazo derivatives,copper, fluorimetry