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Year : 2011  |  Volume : 34  |  Issue : 1  |  Page : 74-76

Application of fission track technique in solution media for analysis of uranium in bioassay samples

1 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
2 Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India

Correspondence Address:
P C Kalsi
Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai
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Source of Support: None, Conflict of Interest: None

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Bioassay monitoring of occupational workers handling uranium (U) is done by analyzing either overnight or 24 h urine samples. U content in these samples is determined by ion exchange technique followed by alpha spectrometry which has Minimum Detectable Activity (MDA) of about 40 ng for 1 d counting time. The need is to detect daily urinary excretion of 21 ng in case of Type S U(nat.) compounds, so as to record Committed Effective Dose (CED) corresponding to 1 mSv. Fission track analysis (FTA) technique in solution media was therefore standardized using Pnuematic Carrier Facility (PCF) of Dhruva reactor for estimation of low levels U in bioassay samples.

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