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Separation and measurement of Pa, Th, and U isotopes in marine sediments by microwave-assisted digestion and multiple collector inductively coupled plasma mass spectrometry.

Abstract:

This manuscript describes a new protocol for determination of Pa/Th/U in marine sediments. It is based on microwave-assisted digestion and represents an important reduction of working time over conventional hot-plate digestion methods, and the use of HClO(4) is avoided. Although Th and U are completely dissolved with a first microwave step, around 40% of (231)Pa remains undissolved, and a short hot-plate step with reverse aqua regia is required to achieve total digestion and spike equilibrati...

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Publication status:
Published

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Publisher copy:
10.1021/ac802341y

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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Role:
Author
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Journal:
Analytical chemistry
Volume:
81
Issue:
5
Pages:
1914-1919
Publication date:
2009-03-05
DOI:
EISSN:
1520-6882
ISSN:
0003-2700
URN:
uuid:464924ab-f30a-477f-a364-6058195cc267
Source identifiers:
82869
Local pid:
pubs:82869
Language:
English

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