Abstract:
:The concentrations of uranium isotopes and their decay products 226Ra, 222Rn, 210Pb and 210po have been analyzed in the mineral spring waters of a highly radioactive region of Brazil: Aguas da Prata. This region is located in the Poços de Caldas Plateau, one of the largest weathered alkaline intrusions in the world. Dose calculations were performed to evaluate the relative importance of these radionuclides in the exposure of the local population to radiation. Based upon concentrations measured in all the springs available, effective doses per year varying from 1.4 x 10(-4) mSv year(-1) for 238U to 5.1 x 10(-2) mSv year(-1) for 222Rn were observed. The doses from the ingestion of 222Rn, 210Po and 210Pb are of the same order of magnitude, and therefore these radionuclides are the most critical as far as the consumption of these waters is concerned.
journal_name
Radiat Resjournal_title
Radiation researchauthors
Mazzilli B,Camargo IM,Oliveira J,Nieri A,Sampa MH,Silva BLsubject
Has Abstractpub_date
1998-08-01 00:00:00pages
250-2issue
2eissn
0033-7587issn
1938-5404journal_volume
150pub_type
杂志文章abstract::Experiments were performed with three different cell lines, mouse fibroblast LM cells, HeLa S3 cells, and Ehrlich Ascites Tumor (EAT) cells, to establish the possible importance of hyperthermic-induced alterations in cellular K+ content in the mechanism of cell killing by heat. At different time points after the hyper...
journal_title:Radiation research
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journal_title:Radiation research
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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journal_title:Radiation research
pub_type: 杂志文章
doi:
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journal_title:Radiation research
pub_type: 杂志文章
doi:
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pub_type: 杂志文章,评审
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journal_title:Radiation research
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
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journal_title:Radiation research
pub_type: 杂志文章
doi:
更新日期:1993-10-01 00:00:00
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