Determination of gold using clay modified carbon paste electrode

被引：30

作者：

Navrátilová, Z ^{[1
]}

Kula, P ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Geonics, Ostrava 70800, Czech Republic

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2000年 / 367卷 / 04期

关键词：

D O I：

10.1007/s002160000401

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Sorption of gold(III) chlorocomplexes was studied by means of a carbon paste electrode modified with montmorillonite, Anionic exchange behavior was found in chloride media with low ionic strength. Anionic sorption of [AuCl4](-) can be used as a preconcentration step to the determination of Au(III). Linear calibration dependences were found in the concentration range 4.06 x 10(-6) - 1.22 x 10(-5) mol/L Au(III) after 5 min of sorption and in the range 8.12 x 10(-7) - 6.1 x 10(6) mol/L after 10 min of sorption. Interferences of several anions and cations were studied. Model samples of table water were analyzed.

引用

页码：369 / 372

页数：4

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