The isotope-dilution determination of platinum in soil by inductively coupled plasma mass spectrometry

被引：4

作者：

Tresl, I ^{[1
]}

Mestek, O ^{[1
]}

Suchánek, M ^{[1
]}

机构：

[1] Inst Chem Technol, Dept Analyt Chem, CR-16628 Prague 6, Czech Republic

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 2000年 / 65卷 / 12期

关键词：

platinum; isotope dilution; mass spectrometry; soil;

D O I：

10.1135/cccc20001875

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method of the determination of trace amounts of platinum in soils has been developed and validated. Samples were ignited, spiked by Pt-198 and decomposed by acid digestion (HF-HClO4, HCl-HNO3). Platinum was separated from the matrix by tellurium coprecipitation (recovery 55-87%) and its content was calculated by the (Pt-194 + Pt-195 + Pt-196)/Pt-198 ratio measurement. In spite of the separation step (hafnium and tungsten recovery below 1%), residual spectral interference caused by HfO+ ions was observed. This interference as well as that of Hg-198 were removed by mathematical correction. Accuracy of the method was confirmed by analysis of certified reference material and by the standard addition method. Detection limit of the method was 0.08 ng g(-1) Pt. It was found out that the main component of the standard uncertainty of results was sampling uncertainty. Analysis of soil samples taken in the neighbourhood of Hrensko (Northern Bohemia) showed high platinum contents near the road with heavy traffic.

引用

页码：1875 / 1887

页数：13

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