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Doses from 222Rn, 226Ra, and 228Ra in groundwater from Guarani aquifer, South America.

Abstract：

:Groundwater samples were analysed for 222Rn, 226Ra, and 228Ra in Guarani aquifer spreading around 1 million km2 within four countries in South America, and it was found that their activity concentrations are lognormally distributed. Population-weighted average activity concentration for these radionuclides allowed to estimate a value either slightly higher (0.13 mSv/year) than 0.1 mSv for the total effective dose or two times higher (0.21 mSv/year) than this limit, depending on the choice of the dose conversion factor. Such calculation adds useful information for the appropriate management of this transboundary aquifer that is socially and economically very important to about 15 million inhabitants living in Brazil, Argentina, Uruguay and Paraguay.

journal_name

J Environ Radioact

journal_title

Journal of environmental radioactivity

authors

Bonotto DM

doi

10.1016/j.jenvrad.2003.11.010

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

319-35

issue

3

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(04)00050-5

journal_volume

76

pub_type

杂志文章

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