Distribution and enrichment of Po-210 in the environment of Kaiga in South India

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Karunakara, N. and Avadhani, D.N. and Mahesh, H.M. and Somashekarappa, H.M. and Narayana, Y. and Siddappa, K. (2000) Distribution and enrichment of Po-210 in the environment of Kaiga in South India. Journal of Environmental Radioactivity, 51 (3). pp. 349-362. ISSN 0265-931X

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Official URL: https://doi.org/10.1016/S0265-931X(00)00094-1

Abstract

Several soil and vegetation samples from the environment of Kaiga nuclear power plant site in the south western region of India were analysed for Po-210. The vertical profile, particle-size distribution, seasonal variation and the dry deposition rate of Po-210 were measured employing the chemical method and alpha - counting technique. Po-210 activity in soil varies from 17.1 to 228.2 Bq kg(-1) with a mean value of 83.3 Bq kg(-1). The activity of Po-210 is higher in the surface soil (0-5 cm) and decreases as depth increases to 20 cm and remains nearly constant thereafter. The activity concentration is almost uniform in the grain sizes of 350-177 mu m and below 177 mu m. Pterobryopsis tumida (Hook.) Dir, a plant of the moss family, shows a very high level of Po-210 activity - 2724 +/- 13 Bq kg(-1). Seasonal variation studies show elevated levels of Po-210 in vegetation during winter. The annual dry deposition rate of Po-210 was 53.4 Bq m(-2) yr(-1). (C) 2000 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: radioactivity; environment; polonium; bioindicators; alpha-counting
Subjects: Faculty of Science > Environmental and Biological Sciences
Divisions: Jnana Bharathi / Central College Campus > Department of Environmental Science
Depositing User: Ms. Sathyavathi N
Date Deposited: 22 Oct 2016 09:29
Last Modified: 22 Oct 2016 09:29
URI: http://eprints-bangaloreuniversity.in/id/eprint/6825

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