A study of radon emitted from building materials using plastic α-track detectors

Films made from cellulose nitrate LR-115 (Pathé Kodak) and CR-39 have been used for long-term measurements of the radon-222 emanation from building materials and the resultant activity inside houses. The emanation from crushed granite bricks is found to be produced from within the brick while in the...

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Bibliographic Details
Published in:Physics in medicine & biology 1980-07, Vol.25 (4), p.683-694
Main Authors: Abu-Jarad, F, Fremlin, J H, Bull, R
Format: Article
Language:English
Subjects:
Alpha Particles
Construction Materials
Environmental Exposure
Radiation Dosage
Radiation Monitoring - instrumentation
Radioactivity
Radon
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Summary:Films made from cellulose nitrate LR-115 (Pathé Kodak) and CR-39 have been used for long-term measurements of the radon-222 emanation from building materials and the resultant activity inside houses. The emanation from crushed granite bricks is found to be produced from within the brick while in the clay bricks it originates in the surface layers only. The airborne radon activity inside houses constructed from clay brick is found on average to be 22 mBq 1-1 (0.57 pCi 1-1) while inside a closed vessel sealed to the brick the average equilibrium activity is 40 mBq 1-1 pCi 1-1).
ISSN:0031-9155
1361-6560
DOI:10.1088/0031-9155/25/4/007