Determination of gross α-activity in urine by microprecipitation with LaF3 and α-spectrometry

Guo Jia; S. Bazzari; F. Micci; C. Testa

doi:10.1007/bf02068652

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 178: Issue 1

Determination of gross α-activity in urine by microprecipitation with LaF₃ and α-spectrometry

Authors:

Guo Jia

Guo Jia Institute of Atomic Energy Beijing (China)

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S. Bazzari

S. Bazzari ENEA C.R.E. Casaccia Services and General Affairs, Medical and Radiotoxicological Service Rome (Italy)

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F. Micci

F. Micci ENEA C.R.E. Casaccia Services and General Affairs, Medical and Radiotoxicological Service Rome (Italy)

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, and

C. Testa

C. Testa Urbino University General Chemistry Institute Urbino (Italy)

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Pages:: 11–18

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 Feb 1994

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02068652

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Abstract

This paper describes a method for the determination of gross -activity (actinides) in urine. The method consists of a coprecipitation of actinides as Fe/Ca phosphates and hydroxides, a purification as iron phosphate and a LaF₃ source preparation; -spectrometry is then carried out without any electroplating procedure. The average recoveries of the method for actinides (except uranium) were about 83.8±8.1%. With a counting time of 1440 min and a counting efficiency of 38% the detection limit was 0.25 mBq/l (6.8 fCi/l). The gross -activity in urine blanks ranged from 0.35 to 0.80 mBq/l (9.4 to 22 fCi/l).

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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)