Rapid, versatile and sensitive method for the quantification of radium in environmental samples through cationic extraction and inductively coupled plasma mass spectrometryElectronic supplementary information (ESI) available. See DOI: 10.1039/c8ja00060c

Rapid, versatile and sensitive method for the quantification of radium in environmental samples... In this study, the method proposed by St-Amant et al. based on ionic chromatography was modified to rapidly quantify 226Ra and 228Ra by inorganic mass spectrometry in a broad variety of matrices at environmental levels. The sample volume loaded on the cationic resin AG50Wx8 was varied to achieve the highest possible adsorption without any significant loss of retention for radium. The pH and volume for the elution steps were optimized to obtain the highest pre-concentration factor and compatibility with plasma-based instruments and to eliminate interference to the maximum extent possible. Finally, inductively coupled plasma mass spectrometry (ICP-MS) instrumental conditions were investigated and optimized for the quantification of radium. An instrumental detection limit of 0.53 pg L1 in 226Ra and 0.47 pg L1 in 228Ra were achieved. When combined with the cationic separation procedure for interference removal, the overall method detection limit decreases to 10 fg L1 in less than 2 hours. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Analytical Atomic Spectrometry Royal Society of Chemistry

Rapid, versatile and sensitive method for the quantification of radium in environmental samples through cationic extraction and inductively coupled plasma mass spectrometryElectronic supplementary information (ESI) available. See DOI: 10.1039/c8ja00060c

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Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
0267-9477
eISSN
1364-5544
D.O.I.
10.1039/c8ja00060c
Publisher site
See Article on Publisher Site

Abstract

In this study, the method proposed by St-Amant et al. based on ionic chromatography was modified to rapidly quantify 226Ra and 228Ra by inorganic mass spectrometry in a broad variety of matrices at environmental levels. The sample volume loaded on the cationic resin AG50Wx8 was varied to achieve the highest possible adsorption without any significant loss of retention for radium. The pH and volume for the elution steps were optimized to obtain the highest pre-concentration factor and compatibility with plasma-based instruments and to eliminate interference to the maximum extent possible. Finally, inductively coupled plasma mass spectrometry (ICP-MS) instrumental conditions were investigated and optimized for the quantification of radium. An instrumental detection limit of 0.53 pg L1 in 226Ra and 0.47 pg L1 in 228Ra were achieved. When combined with the cationic separation procedure for interference removal, the overall method detection limit decreases to 10 fg L1 in less than 2 hours.

Journal

Journal of Analytical Atomic SpectrometryRoyal Society of Chemistry

Published: May 17, 2018

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