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Biosorption of 226Ra in high level natural radiation areas of Ramsar, Iran

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Abstract

Bacterial strains isolated from hot springs and soil of high level natural radiation areas of Ramsar, a northern coastal city of Iran, have been studied for their 226Ra sorption ability from aqueous solutions. Gamma-spectrometry showed that the uptake values of strains A-C, T-A, A-E and CH-G at a radioactivity level of 4.3±0.2 Bq·mlℒ1 were 202±53, 171±49, 123±11 and 53±6 Bq·gℒ1, respectively. Biosorption was the major mechanism involved in 226Ra uptake and was not affected by 2,4-dinitrophenol (DNP) or incubation at 4°C. There was an inverse relationship between the rapid radium uptake value and biomass weight in the strains A-C and A-E. Strain A-C was identified as Citrobacter freundii and strains T-A, A-E and CH-G belonged to the genera Corynebacterium, Chromobacterium and Chryseobacterium, respectively.

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Authors and Affiliations

  1. Biology Department, Faculty of Sciences, Tehran University, P.O. Box 14155, 6455, Tehran, Iran

    D. Satvatmanesh & F. Siavoshi

  2. National Radiation Protection Department, Iranian Nuclear Regulatory Authority, P.O. Box 14155, 4494, Tehran, Iran

    M. M. Beitollahi, J. Amidi & N. Fallahian

Authors
  1. D. Satvatmanesh
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  2. F. Siavoshi
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  3. M. M. Beitollahi
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  4. J. Amidi
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  5. N. Fallahian
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Satvatmanesh, D., Siavoshi, F., Beitollahi, M.M. et al. Biosorption of 226Ra in high level natural radiation areas of Ramsar, Iran. Journal of Radioanalytical and Nuclear Chemistry 258, 483–486 (2003). https://doi.org/10.1023/B:JRNC.0000011741.66761.b1

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  • DOI: https://doi.org/10.1023/B:JRNC.0000011741.66761.b1

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