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

Guo Gang Jia, S. Bazzari, F. Micci, C. Testa

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This paper describes a method for the determination of gross α-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; α-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 α-activity in urine blanks ranged from 0.35 to 0.80 mBq/l (9.4 to 22 fCi/l). © 1994 Akadémiai Kiadó.
Original languageEnglish
Pages (from-to)11 - 18
Number of pages8
JournalJournal of Radioanalytical Chemistry
Issue number1
Publication statusPublished - Feb 1994
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Inorganic Chemistry
  • Analytical Chemistry

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