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- W2319869298 abstract "A method for measurement of thoron ( 220 Rn) in exhaled air is being developed for routine monitoring of inhaled thorium intakes. Decay products of thoron ( 210 Po and 212 Pb) are collected electrostatically and their progeny are measured subsequently by alpha spectrometry. With the equipment presently used the influence of parameters such as chamber volume, collection head geometry and position, supplied high voltage, flow rate and subsequent counting time on the collection efficiency have been investigated. The overall efficiency is approximately 8% at the moment. This makes the method capable of detecting thorium in lungs at an amount of 3% of an ALI (Annual Limit on Intake), for example corresponding to 0.9 Bq of 232 Th (class W), as required by the German radiation protection monitoring guidelines." @default.
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- W2319869298 date "1998-10-01" @default.
- W2319869298 modified "2023-09-26" @default.
- W2319869298 title "Monitoring of Thorium Incorporation by Thoron in Breath Measurement - Technical Design of a Routine Method" @default.
- W2319869298 doi "https://doi.org/10.1093/oxfordjournals.rpd.a032458" @default.
- W2319869298 hasPublicationYear "1998" @default.
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