A comparative study between the dynamic method and passive can technique of radon exhalation measurements from samples
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Title |
A comparative study between the dynamic method and passive can technique of radon exhalation measurements from samples
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Creator |
MENON, SR
SAHOO, BK BALASUNDAR, S GAWARE, JJ JOSE, MT VENKATRAMAN, B MAYYA, YS |
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Subject |
SINGHBHUM SHEAR ZONE
BUILDING-MATERIALS NATURAL RADIOACTIVITY LUNG-CANCER FLY-ASH INDIA DIFFUSION DEPOSITS RATES RISK Radon exhalation Can technique SSNTD Leak Thoron interference Active monitor Dynamic method |
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Description |
A comparative study has been carried out between the SSNTD based 'can' technique and active monitors based dynamic method using nine different samples, eight of granite and one of phosphogypsum. Besides radon (Rn-222) exhalation, thoron (Rn-220.) exhalation and Ra-226 and Th-232 content were also measured. The results are: (i) presence of significant thoron exhalation from samples and (ii) observation of thoron interference and leak (similar to 0.05 h(-1)) from the 'can' in the SSNTD based 'can' technqiue. The study unequivocally demonstrates the presence of intrinsic uncertainty in SSNTD based 'can' technique. Instead, dynamic method offers a more reliable and faster method. (C) 2015 Elsevier Ltd. All rights reserved.
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Publisher |
PERGAMON-ELSEVIER SCIENCE LTD
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Date |
2016-01-14T12:57:45Z
2016-01-14T12:57:45Z 2015 |
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Type |
Article
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Identifier |
APPLIED RADIATION AND ISOTOPES, 99,172-178
0969-8043 http://dx.doi.org/10.1016/j.apradiso.2015.02.004 http://dspace.library.iitb.ac.in/jspui/handle/100/17555 |
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Language |
en
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