当前位置： SCI文献检索 > JOURNAL OF ENVIRONMENTAL RADIOACTIVITY期刊下所有文献 > Distribution and correlation of the natural radionuclides in a coal mine of the West Macedonia Lignite Center (Greece).

Distribution and correlation of the natural radionuclides in a coal mine of the West Macedonia Lignite Center (Greece).

Abstract：

:The distribution and correlation of six natural nuclides in the West Macedonia Lignite Center, Northern Greece were studied. Fifty-five samples of lignite, aged from 1.8 to 5 million years, and corresponding steriles, beds of marls, clays and sands alternating with the lignite, were collected perpendicular to the mine benches and measured spectroscopically. The mean concentrations of (238)U and (226)Ra in lignites were found to be higher than that in steriles since these nuclides are associated with the organic material of lignite, whereas (238)U/(226)Ra equilibrium was not observed in either lignites or steriles. Finally, the ratio (226)Ra/(228)Ra in lignites was approximately double of that in steriles, confirming the affinity of the (238)U series with the coal matrix in contrast to the (232)Th series. No correlation was found between radionuclide concentrations and the depth of the sample, nor with the ash content of lignite.

journal_name

J Environ Radioact

journal_title

Journal of environmental radioactivity

authors

Tsikritzis LI,Fotakis M,Tzimkas N,Kolovos N,Tsikritzi R

doi

10.1016/j.jenvrad.2007.07.014

subject

Has Abstract

pub_date

2008-02-01 00:00:00

pages

230-7

issue

2

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(07)00196-8

journal_volume

99

pub_type

杂志文章

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