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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(01) [January 2012] >
| Title: | Depth distribution of selected geogenic radionuclides (40K, 226Ra, 232Th) and anthropogenic 137Cs in an undisturbed forest soil in East Slovenia |
| Authors: | Mabit, Lionel
Dornhofer, Patcharin
Martin, Paul
Toloza, Arsenio
Zupanc, Vesna |
| Keywords: | 137Cs
40K
226Ra
232Th
Radium equivalent activity
External gamma dose rate
Radionuclides |
| Issue Date: | Jan-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | To
reinforce Slovenian radioecological survey information, 20 soil profiles
divided into four depth increments of 10 cm were collected in an undisturbed forest in east
Slovenia (46°44¢N, 16°7¢E) to establish the natural (40K,
226Ra and 232Th) and anthropogenic (137Cs)
level of radioactivity. Using gamma spectrometry and
depending on the
depth increment, the average activity concentration of radionuclides ranged from 0.5 to 70 Bq kg-1 for 137Cs, from 535
to 703 Bq kg-1 for 40K, from 49 to
52 Bq kg-1 for 226Ra and from
54 to 62 Bq kg-1 for 232Th. Based on
top soil data (0-10 cm), the radium equivalent activity (Raeq)
is 167 ±
7 Bq kg-1, while
absorbed dose rate (D) due to external gamma radiation of 79 ± 3 nGy h-1 is
higher than the world population-weighted average, reported as 58 nGy h-1 by
UNSCEAR. |
| Page(s): | 45-48 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(01) [January 2012]
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