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Precise determination of femtogram quantities of radium by thermal ionization mass spectrometry

Cohen, Anthony S. and O'Nions, R. Keith (1991). Precise determination of femtogram quantities of radium by thermal ionization mass spectrometry. Analytical Chemistry, 63(23) pp. 2705–2708.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1021/ac00023a008
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Abstract

Femtogram quantities of 226Ra (~ 3 x 106) atoms, or 4 x 10-5 Bq) have been determined in environmental materials, including seawater, mineral samples, and silicate rocks, by thermal ionization mass spectrometry. Chemical separation techniques suitable for all these materials are described here. Overall, these techniques enable the abundance of 226Ra to be determined in samples of both seawater and silicates which are some 103 times smaller than those required by conventional radioactive counting methods.

Item Type: Journal Article
Copyright Holders: 1991 American Chemical Society
ISSN: 1520-6882
Academic Unit/Department: Science > Environment, Earth and Ecosystems
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 11824
Depositing User: Anthony Cohen
Date Deposited: 07 Oct 2008 07:10
Last Modified: 27 Mar 2014 15:55
URI: http://oro.open.ac.uk/id/eprint/11824
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