1. Gamma spectrometry analysis of radioiodine in charcoal from high volume aerosol samples.
- Author
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Nolan, L., Murphy, N.M., Burbidge, C.I., O Brien, D., Leon Vintró, L., Hanley, O., and Currivan, L.
- Subjects
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AEROSOL sampling , *CHARCOAL , *IODINE isotopes , *GERMANIUM detectors , *SPECTROMETRY , *MONTE Carlo method - Abstract
Following accidental releases, gamma spectrometry of impregnated charcoal filters is used to measure gaseous 131I contamination, but is subject to sampling inhomogeneity. In this study two germanium detectors are calibrated using a charcoal multi-gamma standard. Activities in samples spiked with a matrix of 131I aliquots are compared based on measurement, spike known activity, and monte-carlo simulation, and used to test a simple mixing method. Measurement efficiency, and removal of 11% inhomogeneity effect by mixing, was successfully reproduced in GESPECOR calculations. • Development of a simple methodology for the accurate monitoring/measurement of gaseous 131I in high volume air sampler charcoal filter media is successfully achieved. •GESPECOR Monte Carlo simulation software is used to model the measurements. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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