当前位置： SCI文献检索 > JOURNAL OF ENVIRONMENTAL RADIOACTIVITY期刊下所有文献 > Distribution and source of (129)I, (239)(,240)Pu, (137)Cs in the environment of Lithuania.

Distribution and source of (129)I, (239)(,240)Pu, (137)Cs in the environment of Lithuania.

Abstract：

:Fifty five soil samples collected in the Lithuania teritory in 2011 and 2012 were analyzed for (129)I, (137)Cs and Pu isotopes in order to investigate the level and distribution of artificial radioactivity in Lithuania. The activity and atomic ratio of (238)Pu/((239,24)0)Pu, (129)I/(127)I and (131)I/(137)Cs were used to identify the origin of these radionuclides. The (238)Pu/(239+240)Pu and (240)Pu/(239)Pu ratios in the soil samples analyzed varied in the range of 0.02-0.18 and 0.18-0.24, respectively, suggesting the global fallout as the major source of Pu in Lithuania. The values of 10(-9) to 10(-6) for (129)I/(127)I atomic ratio revealed that the source of (129)I in Lithuania is global fallout in most cases though several sampling sites shows a possible impact of reprocessing releases. Estimated (129)I/(131)I ratio in soil samples from the southern part of Lithuania shows negligible input of the Chernobyl fallout. No correlation of the (137)Cs and Pu isotopes with (129)I was observed, indicating their different sources terms. Results demonstrate uneven distribution of these radionuclides in the Lithuanian territory and several sources of contamination i.e. Chernobyl accident, reprocessing releases and global fallout.

journal_name

J Environ Radioact

journal_title

Journal of environmental radioactivity

authors

Ežerinskis Ž,Hou XL,Druteikienė R,Puzas A,Šapolaitė J,Gvozdaitė R,Gudelis A,Buivydas Š,Remeikis V

doi

10.1016/j.jenvrad.2015.09.020

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

166-173

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(15)30114-4

journal_volume

151 Pt 1

pub_type

杂志文章

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