Determination of 226Ra in solid samples of few milligrams after mineralisation and measurement by solid scintillation

被引：4

作者：

Barker, Evelyne ^{[1
]}

Alcalde, Gilles ^{[1
]}

Bassot, Sylvain ^{[1
]}

机构：

[1] Inst Radioprotect & Surete Nucl, 31 Ave Div Leclerc, F-92260 Fontenay Aux Roses, France

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2017年 / 314卷 / 01期

关键词：

Ra-226; Mineralisation; Low mass sample; Solid scintillation measurement; GAMMA-RAY SPECTROMETRY; OCCURRING RADIOACTIVE MATERIALS; ALPHA-SPECTROMETRY; RADIUM ISOTOPES; WATER SAMPLES; NATURAL-WATERS; RAPID ANALYSIS; URANIUM; SOIL; RADIONUCLIDES;

D O I：

10.1007/s10967-017-5399-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A protocol is proposed for the measurement of Ra-226 on 150 mg of solid sample without radiochemistry. To evaluate the performance of this method, standard samples were used and the results were in good agreement with reference values. The detection limit obtained is about 130 Bq kg(-1) (dry weight) without mineralised solution concentration by evaporation. A concentration of the solution by 4 and/or an increase of sample mass by 4 in the case of microwave digestion system, allows achieving a detection limit of 30 Bq kg(-1) (dry weight) and thus measuring Ra-226 in most soils. This method could also be used for NORM sites on soil and sediment samples.

引用

页码：353 / 358

页数：6

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