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Evaluation of methods for the radiometric measurement of americium-241 in environmental samples

Livens, Francis R.; Singleton, Diana L.. 1989 Evaluation of methods for the radiometric measurement of americium-241 in environmental samples. Analyst, 114 (9). 1097-1101. 10.1039/AN9891401097

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Abstract/Summary

The presence of substantial amounts of manganese in a series of soil samples (about 7000 p.p.m.) led to the failure of an established method for the determination of 241Am in soils and environmental samples. A review of alternative approaches led to the development and optimisation of a more robust technique. After acid dissolution, solvent extraction of iron and anion-exchange separation of plutonium isotopes, manganese is removed by cation exchange. Rare earth elements and americium are coprecipitated on Fe(OH)3, separated by anion exchange in nitric acid-methanol and the remaining impurities removed by anion exchange in nitric acid. Chemical yields are greatly improved and analysis of reference materials gives satisfactory results.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1039/AN9891401097
Programmes: CEH Programmes pre-2009 publications > Other
CEH Sections: _ Pre-2000 sections
ISSN: 0003-2654
Additional Keywords: radioecology
NORA Subject Terms: Ecology and Environment
Date made live: 27 Mar 2013 15:48 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/21325

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