Determination of 210Pb and 210Po in environmental samples by alpha ray spectrometry using an extraction chromatographic resin

被引：32

作者：

Miura, T ^{[1
]}

Hayano, K ^{[1
]}

Nakayama, K ^{[1
]}

机构：

[1] Japan Chem Anal Ctr, Chiba 2630002, Japan

来源：

ANALYTICAL SCIENCES | 1999年 / 15卷 / 01期

关键词：

polonium-210; lead-210; alpha ray spectrometry; extraction chromatography; standard reference material;

D O I：

10.2116/analsci.15.23

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A determination method using an extraction chromatographic resin (EiChroM Sr.Spec(TM)) has been developed for Pb-210 and Po-210 in environmental samples by alpha ray spectrometry. Pb-210 and Po-210 were coprecipitated simultaneously on CuS at pH 4.0-5.5. These nuclides were then adsorbed on a Sr.Spec(TM) resin column (0.79x4.0 cm) in 4 M HCl. The Pb-210 and Po-210 on the resin were eluted with 8 M HCl and 6 M HNO3, respectively. Po-210 was determined by alpha-ray spectrometry after plating on a stainless-steel disk. Pb-210 was determined as Po-210 produced from Pb-210 decay. The method was applied to soil (IAEA-326) and sediments (NIST-4354, IAEA-135, IAEA-368) standard reference materials, and the results agreed with their recommended values. The chemical yield of Po ranged from 56 to 99% and the, yield of Pb was 95%. The detection limits of Pb-210 and Po-210 were 0.6 mBq/sample at a counting time of 70000 s.

引用

页码：23 / 28

页数：6

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