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.
All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
- Inorganic Chemistry
- Analytical Chemistry
Jia, G. G., Bazzari, S., Micci, F., & Testa, C. (1994). Determination of gross α-activity in urine by microprecipitation with LaF3 and α-spectrometry. Journal of Radioanalytical Chemistry, 178(1), 11 - 18. https://doi.org/10.1007/BF02068652