A dry ashing assay method for the trace determination of Th and U in polymers using inductively coupled plasma mass spectrometry

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A dry ashing assay method for the trace determination of Th and U in polymers using inductively coupled plasma mass spectrometry

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作者：Isaac J. Arnquist ; May-Lin P. Thomas…
关键词：Polymers ; Uranium ; Thorium ; Radiopurity assay ; Inductively coupled plasma mass spectrometry
刊名：Journal of Radioanalytical and Nuclear Chemistry
出版年：2016
出版时间：March 2016
年：2016
卷：307
期：3
页码：1883-1890
全文大小：438 KB
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作者单位：Isaac J. Arnquist (1)
May-Lin P. Thomas (1)
Jay W. Grate (1)
Mary Bliss (1)
Eric W. Hoppe (1)

1. Pacific Northwest National Laboratory, MSIN J4-60, P.O. Box 999, Richland, WA, 99352, USA
刊物类别：Chemistry and Materials Science
刊物主题：Chemistry
Nuclear Chemistry
Physical Chemistry
Nuclear Physics, Heavy Ions and Hadrons
Diagnostic Radiology
Inorganic Chemistry
出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
ISSN：1588-2780

文摘

This paper discusses the methods developed for determining the radiopurity of high density polyethylene and polyetherketone ketone materials to be considered for use in ultralow background physics experiments. This work focuses on the processes used to render the polymeric samples acid soluble for subsequent ultratrace analysis using inductively coupled plasma mass spectrometry. High density polyethylene was determined to contain 2.19 ± 0.42 pg Th/g and 2.81 ± 0.52 pg U/g. The method provided very low absolute detection limits of 17.2 and 38.1 fg for Th and U, respectively. However, the polyetherketone ketone sample etched or devitrified the quartz, causing determined values to be a factor of 2–4 higher for Th and 5–9 higher for U from dissolution assay results.