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Issue 17, 2020
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Detection of radium at the attogram per gram level in copper by inductively coupled plasma mass spectrometry after cation-exchange chromatography

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Abstract

In this study, a new method was developed for the separation and isolation of radium from metallic copper. Radium was separated from matrix constituents and possible impurities using an AG50W-X8 cationic resin and a series of specific-pH eluants containing complexing ligands. An instrumental detection limit of 2 mBq L−1 (53 fg L−1) and a quantification limit of 6 mBq L−1 (175 fg L−1) were achieved when the separation method was coupled with ICP-MS. The limits of detection and quantification for the new method translate into 0.3 μBq g−1 (9 ag g−1) and 1 μBq g−1 (28 ag g−1), respectively, for a 100 g sample treated by leaching. This method can be used to measure radium content at the ultratrace level in copper to be used in the fabrication of sensitive radiation detectors.

Graphical abstract: Detection of radium at the attogram per gram level in copper by inductively coupled plasma mass spectrometry after cation-exchange chromatography

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Article information


Submitted
11 Mar 2020
Accepted
08 Apr 2020
First published
16 Apr 2020

Anal. Methods, 2020,12, 2272-2278
Article type
Paper

Detection of radium at the attogram per gram level in copper by inductively coupled plasma mass spectrometry after cation-exchange chromatography

M. Bonin, D. Larivière and P. P. Povinec, Anal. Methods, 2020, 12, 2272
DOI: 10.1039/D0AY00512F

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