Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 110: Issue 1

Determination of thorium and uranium at the nanogram per gram level in semiconductor potting plastics by neutron activation analysis

Authors:
F. Dyer Oak Ridge National Laboratory Analytical Chemistry Division 37831 Oak Ridge Tennessee (USA)

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J. Emery Oak Ridge National Laboratory Analytical Chemistry Division 37831 Oak Ridge Tennessee (USA)

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, and
L. Bate Oak Ridge National Laboratory Analytical Chemistry Division 37831 Oak Ridge Tennessee (USA)

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Pages:
221–226
Online Publication Date:
13 Aug 2005
Publication Date:
17 Mar 1987
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02055024
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Abstract  

A method was developed to determine thorium and uranium in semiconductor potting plastics. The method is based on neutron activation and subsequent radiochemical separation to isolate and permit measurement of the daughter products233Pa and239Np of the induced233Th and239U. These plastics typically contain macro amounts of silicon, bromine and antimony and nanogram per gram amounts of thorium and uranium. The radiochemical method provides the necessary sensitivity and makes it possible to easily attain adequate decontamination of the tiny amounts of233Pa and239Np from the high levels of radioactive bromine and antimony.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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