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Verlinde M, Gorny J, Montavon G, Khalfallah S, Boulet B, Augeray C, Larivière D, Dalencourt C, Gourgiotis A. A new rapid protocol for 226Ra separation and preconcentration in natural water samples using molecular recognition technology for ICP-MS analysis. J Environ Radioact 2019; 202:1-7. [PMID: 30771696 DOI: 10.1016/j.jenvrad.2019.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/02/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
A new rapid protocol for 226Ra separation and preconcentration in natural water samples was developed before its determination by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). For this purpose, the commercially available Ra specific resin AnaLig® Ra-01 was used. This resin shows a high selectivity for radium in a large range of acid concentrations and no affinity or possible elution of 226Ra interfering elements. The distribution coefficients of Ra and other elements over a wide range of acid (HCl and HNO3) concentrations were obtained. Due to the high radium selectivity, the new developed protocol uses only 50 mg of dry resin and its performance was evaluated using 100 mL of three natural waters with different ionic strengths, spiked with a known quantity of 226Ra. Radium was successfully separated and preconcentrated yielding recoveries ranging between 72% and 86%. In parallel with the characterisation of the resin sorption properties, a detailed study of polyatomic interferences was performed on our ICP-MS allowing to identify the prominent elements favouring interferences at m/z = 226. Furthermore, a 226Ra sensitivity comparison between different ICP-MS instruments and configurations was done in order to determine high sensitivity conditions for radium analysis.
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Affiliation(s)
- M Verlinde
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SEDRE/LELI, 31 Avenue de la Division Leclerc, 92260, Fontenay-aux-Roses, France
| | - J Gorny
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SEDRE/LELI, 31 Avenue de la Division Leclerc, 92260, Fontenay-aux-Roses, France
| | - G Montavon
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - S Khalfallah
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - B Boulet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SAME/LMRE, Bat 501 Bois des Rames, 91400, Orsay, France
| | - C Augeray
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SAME/LERCA, 31 rue de l'Ecluse, 78110, Le Vésinet, France
| | - D Larivière
- Laboratoire de radioécologie, Département de chimie, Université de Laval, 1045 Avenue de la médecine, G1V 0A6, Québec, Canada
| | - C Dalencourt
- Laboratoire de radioécologie, Département de chimie, Université de Laval, 1045 Avenue de la médecine, G1V 0A6, Québec, Canada
| | - A Gourgiotis
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SEDRE/LELI, 31 Avenue de la Division Leclerc, 92260, Fontenay-aux-Roses, France.
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