Catalytic kinetic spectrophotometric determination of trace amounts of palladium with Dahlia Violet after separation and preconcentration on sulphydryl dextran gel

被引：6

作者：

Du, B. ^{[1
]}

Yan, T. ^{[1
]}

Liu, S.-Y. ^{[1
]}

Wang, J. ^{[1
]}

Wei, Q. ^{[1
]}

机构：

[1] Jinan Univ, Sch Chem Engn & Chem, Jinan 250022, Peoples R China

来源：

JOURNAL OF ANALYTICAL CHEMISTRY | 2007年 / 62卷 / 08期

基金：

中国国家自然科学基金;

关键词：

palladium(II); Dahlia Violet; catalytic kinetic spectrophotometry; separation and concentration; sulphydryl dextran gel (SDG);

D O I：

10.1134/S1061934807080175

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sensitive and selective kinetic catalytic spectrophotometric method has been described for the determination of trace amounts of palladium(II). The method is based on the catalytic effects of palladium(II) on the reduction reactions of Dahlia Violet with sodium dihydrogen hypophosphite (NaH2PO2) in a sulfuric acid medium. Under optimal conditions, trace amounts of palladium(II) can be determined. A good linear range has been obtained in the concentration range of Pd(II) over 0.001-0.028 mu g/mL with a detection limit of 5.9 x 10(-10) g/mL. The method has been successfully applied to the determination of palladium(II) in ore and soil samples. The relative standard deviation was less than 5.0% (n = 11). The coexisting ions were eliminated by preconcentration and separation on sulphydryl dextran gel with satisfactory results.

引用

页码：794 / 800

页数：7

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