石蜡相分光光度法测定微量钯  

Study on the Determination of Micro Amount of Palladium by Paraffin Phase Spectrophotometry

作　　者：万益群[1] 沈玲霞[1] 郭岚[1] 赵风瑛 

机构地区：[1]南昌大学化学系,南昌330047 [2]南方工业学校,赣州341000

出　　处：《分析试验室》2000年第1期30-32,共3页Chinese Journal of Analysis Laboratory

基　　金：江西省青年基金

摘　　要：以石蜡为固体萃取剂，系统地探讨了钯－丁二酮肟（ＤＭＧ） 显色体系在石蜡相最佳显色条件及光度特性。钯的浓度在０～８０ ｍ ｇ／５０ Ｌ范围内符合比尔定律，相关系数ｒ＝ ０．９９９７。方法检出限为１．７５×１０－ ５ｇ／Ｌ。该法选择性好，大多数常见离子不干扰钯的测定，灵敏度比液相光度法高。应用于分子筛中微量钯的测定，结果良好。By selecting paraffin as the solid extraction agent,we have studied the colour reaction of palladium dimethylglyoxime in paraffin phase and the optimum experimental conditions of the colouring system.Beer's law was obeyed in the range of 0 to 80 mg/50 L of Pd.The correlation coefficient is 0.9997 .The detection limit is 1.75×10 -5 g/L.The selectivity of the method is good,and the sensitivity is higher than that of liquid phase method.Most common ions did not interfere with the determination of palladium.The method has been applied to the determination of micro amount of palladium in molecular sieves with satisfactory results.

关 键 词：石蜡相 分光光度法 钯 丁二酮肟 

分 类 号：O614.823[理学—无机化学] O657.32[理学—化学]