Abstract:
:Spatial distribution of activity concentrations of (137)Cs, (90)Sr, and (239,240)Pu in the top layer of undisturbed meadow soils was compared between two regional transects across Lithuania: one in the SW region, more affected by the Chernobyl radioactive fallout, and the other in the NE region. Radiochemical, γ-, α-, β-, and mass spectrometric methods were used to determine the radionuclide activity. Our results validate that higher activity concentrations in the top soil layer were present in the SW region, despite the fact that sampling was performed after 22 years of the Chernobyl Nuclear Power Plant (NPP) accident. Using the activity concentration ratio (137)Cs/(239,240)Puglobal, the contribution of the Chernobyl NPP accident to the total radiocesium activity concentrations in these meadow soils was evaluated and found to be in the range of 6.5-59.1%. Meanwhile, the activity concentration ratio (238)Pu/(239,240)Pu showed that Chernobyl-derived Pu occurred at almost half of the sampling sites. The locations with maximal values of 47% of Chernobyl-derived Pu material were close to northeastern Poland, where deposition of most of non-volatile radioisotopes from the Chernobyl plume was determined.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Lukšienė B,Puzas A,Remeikis V,Druteikienė R,Gudelis A,Gvozdaitė R,Buivydas Š,Davidonis R,Kandrotas Gdoi
10.1007/s10661-015-4491-9subject
Has Abstractpub_date
2015-05-01 00:00:00pages
268issue
5eissn
0167-6369issn
1573-2959journal_volume
187pub_type
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