钯(Ⅱ)与二溴对甲基偶氮磺显色反应的研究  

Study on the colour reaction of Pd(Ⅱ)-DBM-MSA

作　　者：寇明泽[1] 王传娥[1] 寇宗燕[1] 

机构地区：[1]甘肃联合大学理工学院,兰州730000

出　　处：《分析试验室》2005年第7期68-69,共2页Chinese Journal of Analysis Laboratory

摘　　要：钯(Ⅱ)与二溴对甲基偶氮磺在HNO3介质中形成组成比为1∶2的绿蓝色的配合物,其最大吸收波长位于610nm处,表观摩尔吸光系数ε610=4.0×104L·mol-1·cm-1,钯的质量浓度在0～0.80mg/L范围内符合比尔定律。该法常温下可在水相中直接测定微量钯。并应用于废钯催化剂回收液中钯的测定。<Abstrcat>The colour reaction of Pd(Ⅱ) with DBM-MSA and its analytical application were studied. A new method for the determination of trace Pd(Ⅱ)is Proposed. Beer′s law is obyed for Pd(Ⅱ)in the range of 0.0～0.80 mg/L, and the molar absorptivity is 4.0×10~4 (L·mol^(-1)·cm^(-1)) at 610 nm. The method can be applied to direct determination of palladium in water at room temperature.

关 键 词：二溴对甲基偶氮磺 钯 分光光度法 

分 类 号：O657.32[理学—分析化学]