Field Measurements of Radon Exhalation and Ra-226 Content in Soil using the Can-Technique
作者:
A. F. Hafez,
A. M. El-Khatib,
B. M. Moharram,
M. A. Kotb,
A. Abdel-Naby,
期刊:
Isotopenpraxis Isotopes in Environmental and Health Studies
(Taylor Available online 1991)
卷期:
Volume 27,
issue 4
页码: 188-190
ISSN:0021-1915
年代: 1991
DOI:10.1080/10256019108622505
出版商: Taylor & Francis Group
关键词: dielectric track detectors;exhalation;geochemical surveys;prospecting;quantity ratio;radioactivity;radon isotopes;radium 226;soils;sudan;uranium 238
数据来源: Taylor
摘要:
CR-39 and LR-115 plastic nuclear track detectors in the can-technique have been employed in the field measurements of radon exhalation, Ra-226 and U-238 content in dry-soil air at numerous regions in Sudan (the Blue and White Nile and Mogran regions). Measurements gave an average radon exhalation from the soil to the atmosphere and Ra-226 content of (23.4 ± 2.60) kBq · m−2and (123 ± 13.65) Bq · kg−1respectively. A polyethylene permeable membrane cover was used to eliminate the contribution of thoron activity inside the can. Assuming a radioactive equilibrium between the U-series, the average U-238 content in the soil was found to be (9.92 ± 1.01) ppm. This survey may be used for uranium prospection in soil.
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