Determination of .sup.227Ac in water by alpha spectrometry after purification with titanium phosphate and DGA resin

Determination of .sup.227Ac in water by alpha spectrometry after purification with titanium phosphate and DGA resin

A new routine method to measure .sup.227Ac in water samples was developed. Actinium-227 was separated from potential radioactive and matrix interferences using a DGA resin (Eichrom) at optimal extraction and elution conditions (2 M and 15.7 M HNO.sub.3, respectively). This was possible because Ac wa...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2022-12, Vol.331 (12), p.5781
Hauptverfasser: Guérin, N, Fabian, X, Leppinen, J, Gagné, A
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Analysis
Filmmakers
Phosphates
Spectrum analysis
Water
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creator Guérin, N
Fabian, X
Leppinen, J
Gagné, A
description A new routine method to measure .sup.227Ac in water samples was developed. Actinium-227 was separated from potential radioactive and matrix interferences using a DGA resin (Eichrom) at optimal extraction and elution conditions (2 M and 15.7 M HNO.sub.3, respectively). This was possible because Ac was pre-concentrated and separated from Ca using titanium phosphate co-precipitation at pH 3.5. Finally, .sup.227Ac was counted by alpha spectrometry for 48 h after a cerium fluoride micro-precipitation. A minimal detection limit of 0.03 ± 0.01 Bq l.sup.-1 was obtained. The method was validated using spiked water samples.
doi_str_mv 10.1007/s10967-022-08619-0
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subjects Analysis
Filmmakers
Phosphates
Spectrum analysis
Water
title Determination of .sup.227Ac in water by alpha spectrometry after purification with titanium phosphate and DGA resin
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