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Measurement of tritium in air by adsorbent

1979; Elsevier BV; Volume: 163; Issue: 2-3 Linguagem: Inglês

10.1016/0029-554x(79)90133-2

1878-3759

Takahisa Kato,

Radiation Detection and Scintillator Technologies

A scintillation method which measures tritium contamination in air using liquid adsorbent is described. In this method tritium in the atmosphere is adsorbed onto an adsorbent, then mixed in a liquid scintillator, and measured by a liquid scintillation counter. The adsorbent has two roles: first to adsorb tritium and second to be one component of the liquid scintillator. According to this method, the accumulated quantity of tritium is proportional to its sampling period and to the sample volume of adsorbent in which tritium is adsorbed uniformly. The variation of counting rate to the mixed sample volume in a liquid scintillator is observed using a liquid scintillation counter. From the results, the optimum mixed volume of sample, adsorbent for maximum sensitivity is established, and the detectable concentration of tritium in air found to be 10−7 μCi/ml or less.