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Multiple ion counting determination of plutonium isotope ratios using multi-collector ICPMS

Record type: Article

Sector-field multi-collector inductively coupled plasma mass spectrometers, commonly referred to as MC-ICP-MS, can now be fitted with multiple ion counting detectors in tandem with the array of Faraday detectors. In this paper, for the first time, we utilise such an array to measure plutonium isotopes. The chief advantage of multiple ion counting is that it obviates the need to cycle a number of small ion beams through a single collector, and hence increases the efficiency of ion beam usage. This increase in efficiency, combined with the elimination of effects produced by ion beam instability, makes multi-channel analysis an ideal method for low-level plutonium isotope analysis. Mass bias and inter-detector bias can be corrected using an external standard solution, which can be uranium or plutonium based. Using minimised analytical times and desolvating nebulisation, 240Pu/239Pu can be reproduced to better than 3% 2s with less than 10 fg of Pu.

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Citation

Taylor, Rex N., Warneke, Thorsten, Milton, J. Andrew, Croudace, Ian W., Warwick, Phillip E. and Nesbitt, Robert W. (2003) Multiple ion counting determination of plutonium isotope ratios using multi-collector ICPMS Journal of Analytical Atomic Spectrometry, 18, (5), pp. 480-484. (doi:10.1039/b300432e).

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Published date: 2003

Identifiers

Local EPrints ID: 12626
URI: http://eprints.soton.ac.uk/id/eprint/12626
ISSN: 0267-9477
PURE UUID: 658cc1de-6a47-4825-9b37-e7af4f6b5a39

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Date deposited: 02 Dec 2004
Last modified: 17 Jul 2017 17:02

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Contributors

Author: Rex N. Taylor
Author: Thorsten Warneke
Author: Ian W. Croudace
Author: Robert W. Nesbitt

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