新显色剂5-磺酸基[杯(4)芳烃偶氮]氨基喹啉的合成及与钯显色反应的研究  

SYNTHESIS OF 5-SULPHONATE [CALIX (4) ARENEAZO] AMINOQUINOLINE AND ITS COLOUR REACTION WITH PALLADIUM

作　　者：黄章杰[1] 胡秋芬[2] 杨光宇[2] 尹家元[2] 

机构地区：[1]云南大学科技处,昆明650091 [2]云南大学化学系

出　　处：《理化检验（化学分册）》2002年第10期492-494,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：云南省教育厅科学研究基金项目 ( 991114 7)

摘　　要：合成了新试剂 5 磺酸基 [杯 (4)芳烃偶氮 ]氨基喹啉 (SCAQ) ,研究了该试剂与钯 (Ⅱ )显色反应的适宜条件 ,在pH 8.0的缓冲介质中 ,在非离子表面活性剂TritonX 10 0存在下 ,试剂与钯(Ⅱ )生成 1∶1稳定配合物 ,建立了测定钯 (Ⅱ )的光度法新体系 ,体系至少可稳定 6h ,λmax=6 6 0nm ,ε =7.88× 10 4 L·mol- 1·cm- 1,钯 (Ⅱ )浓度在 0～ 30 μg/ 2 5ml范围内服从比耳定律。方法已用于钯催化剂中钯 (Ⅱ )的测定 ,结果与原子吸收光谱法相符 ,RSD为 1.5 %～ 2 .6 %。A new color reagent of 5-sulphonate [calix (4) areneazo] aminoquinoline (SCAQ) was synthesized. The optimum condition for the color reaction of SCAQ and Pd(Ⅱ) was studied. In the presence of nonionic surfactant Triton X-100 and in a buffer solution of pH 8.0, Pd(Ⅱ) reacts with SCAQ to form an stable complex with its mole ratio of 1∶1. A new photometric method for the determination of Pd(Ⅱ) was established. The color complex was stable for at least 6 hours. The absorption maxima was found at 660nm. The molar absorptivity was found to be 7.88×10 4L·mol -1·cm -1 and Beer′s law obeyed in the range of 0～30μg/25ml for Pd(Ⅱ). The method has been applied to the determination of Pd in palladium catalysts. The RSD was found in the range of 1.5% to 2.6% (n=6). The results was in agreement with those obtained by AAS.

关 键 词：显色剂 5-磺酸基[杯(4)芳烃偶氮]氨基喹啉 合成 显色反应 光度法 钯 测定 钯催化剂 分析 

分 类 号：O614.823[理学—无机化学] TQ4[理学—化学]