Comparative analysis of 239Pu, 137Cs, 210Pb and 40K spatial distributions in the top soil layer at the Baltic coast
This paper presents the results of an investigation into the spatial distribution of radionuclides of artificial ( 239,240Pu, 137Cs) and natural ( 210Pb, 40K) origins in the upper (0–5 cm) soil layers on the Baltic coastline of Lithuania (∼5 km 2 area). The samples were analysed by gamma ray spectro...
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Published in | Journal of environmental radioactivity Vol. 87; no. 3; pp. 305 - 314 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
2006
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | This paper presents the results of an investigation into the spatial distribution of radionuclides of artificial (
239,240Pu,
137Cs) and natural (
210Pb,
40K) origins in the upper (0–5
cm) soil layers on the Baltic coastline of Lithuania (∼5
km
2 area). The samples were analysed by gamma ray spectrometry and combined radiochemical procedures. The highest
210Pb,
239,240Pu and
137Cs activity concentrations were determined in the forest samples, whereas
40K activity was rather homogeneous across the study area. Relatively high
239,240Pu and
40K activity concentrations were determined along the surf zone. The
210Pb and
137Cs activity concentrations showed a gradual increase from the surf zone to the forest. The average activity concentrations of
239,240Pu,
137Cs,
210Pb and
40K in the beach and forest samples, respectively, were as follows: 0.32
±
0.08 and 0.74
±
0.14; 50
±
4 and 1190
±
50; 4.7
±
2.0 and 48
±
6; 186
±
15 and 216
±
17
Bq/kg. |
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ISSN: | 0265-931X 1879-1700 |
DOI: | 10.1016/j.jenvrad.2005.12.005 |