Environmental Rn levels around an Indian U complex

The ambient Rn behaviour in the environment around an Indian U complex at Jaduguda is investigated using grab sampling as well as time-integrated monitoring techniques in 1990–1996. In this region with tropical-like climatic conditions, atmospheric Rn levels (i) range from 4.0 to 157 Bq m −3 with a...

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Bibliographic Details
Published in:Journal of environmental radioactivity 2000-01, Vol.48 (2), p.223-234
Main Authors: Jha, S, Khan, A.H, Mishra, U.C
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Exact sciences and technology
Freshwater
India, Jaduguda
Other pollution sources in industry
Pollution
Pollution sources. Measurement results
Rn [formula omitted]
Tropical region
Uranium complex
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Summary:The ambient Rn behaviour in the environment around an Indian U complex at Jaduguda is investigated using grab sampling as well as time-integrated monitoring techniques in 1990–1996. In this region with tropical-like climatic conditions, atmospheric Rn levels (i) range from 4.0 to 157 Bq m −3 with a standard geometric mean of 22 Bq m −3, (ii) attain minima in the afternoon and about 1.5–5 times greater in the morning before sunrise, (iii) exhibit a minimum level during the rainy season and about 4 times greater in winter as a maximum, (iv) average at lower concentrations in days with cloudy skies compared to clear skies. There is a negative linear correlation coefficient of −0.92 between monthly mean ambient temperature and Rn concentration. The radiological significance of Rn levels in air in the nearby areas and the natural background is discussed.
ISSN:0265-931X
1879-1700
DOI:10.1016/S0265-931X(99)00075-2