合成了新试剂2-(2-喹啉偶氮)-1,3-二氨基苯(QADAB),并研究了其与钯的显色反应,在0.2(3.0mol/L HClO4介质中,QADAB与钯反应生成2:1稳定络合物,体系λmax＝590nm,ε＝8.08(104 L·mol-1·cm-1.钯含量在0.01(1.2mg/L内符合比尔定律.本方法用于一些含钯样品中钯含量的测定,结果令人满意.
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