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[en] By using active carbon powder as emission matter, the detect sensitivity of 239Pu was 0.5 pg (1 ± 0.15, 95% confidence level), improved 20 times compared with the sensitivity 10 pg (1 ± 0.5) of the tradition method. The sub-picogram plutonium sample was determined quantatively by isotope dilution mass spectrometry (IDMS). (authors)
Source
Oct 2005; 6 p; CAEP--0157; ISBN 7-5022-3515-9; 
; 1 fig., 3 tabs., 1 ref.
; 1 fig., 3 tabs., 1 ref.