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  1. Natural radioactivity in mineral spring waters of a highly radioactive region of Brazil and consequent population doses.

    Article - En anglais

    Concentration levels of 226Ra, 228Ra and 210Pb have been analysed in most of the mineral spring waters available in the Aguas da Prata region.

    Concentrations ranging from<2.2 TO 2106 MBQ.

    L-1 and from<3.7 TO 23.1 MBQ.

    L-1 were observed for 226Ra and 228Ra, respectively.

    For 210Pb the geometric mean varied from 8.4 to 1040 mBq. l-1.

    Dose calculations were performed in order to evaluate the relative importance of such radionuclides to the radiation exposure due to the ingestion of these waters.

    Based upon measured concentrations, committed effective doses up to 1.1 mSv. y-1,0.55 mSv. y-1 and 10-2 mSv. y-1 were observed for 210Pb, 226Ra and 228Ra, respectively.

    These results show that 210Pb and 226Ra are the main contributors to radiation exposure.

    Mots-clés Pascal : Radioactivité naturelle, Eau potable, Source eau, Dosimétrie, Radioisotope, Analyse radiochimique, Concentration, Environnement, Radiocontamination, Brésil, Amérique du Sud, Amérique, Radiobiologie

    Mots-clés Pascal anglais : Natural radioactivity, Drinking water, Water spring, Dosimetry, Radioisotope, Radiochemical analysis, Concentration, Environment, Radioactive contamination, Brazil, South America, America, Radiobiology

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 94-0618807

    Code Inist : 002A08F03. Création : 09/06/1995.