合成了新试剂 8 [杯 (4 )芳烃偶氮 ]氨基喹啉 (简称CAQ) ,并研究了该试剂与钯显色反应条件。结果表明 ,在pH7 5～ 9 0的NH3·H2 O -NH4 Cl缓冲介质中 ,有溴化十六烷基三甲基铵 (CTMAB)存在下 ,CAQ与钯发生显色反应 ,生成 2∶1蓝色稳定络合物。λmax=62 0nm ,ε =1 3 4× 10 5,钯含量在 0～ 2 0 μg/ 2 5mL内符合比尔定律。方法用于钯催化剂中钯的测定 ,结果令人满意。 A new reagent 8 [calix [4] arene] aminoquinoline (CAQ) was synthesized and the reaction conditions of this reagent with palladium were studied. The results showed that in the presence of cetyltrimethylammonium bromide (CTMAB), the color reaction between CAQ and palladium occurred in the buffer solution of NH3 · H2O-NH4Cl at pH7 ~ Blue stable complex. λmax = 62 0 nm, ε = 134 × 10 5, Beer’s law was obeyed in the range of 0 ~ 20 μg / 25 mL. The method was applied to the determination of palladium in palladium catalyst with satisfactory results.