Atmospheric flux, transport and mass balance of Pb-210 and Cs-137 radiotracers in different regions of Romania

作者：Begy R Cs^*; Kovacs T; Veres D; Simon H

来源：Applied Radiation and Isotopes, 2016, 111: 31-39.

DOI：10.1016/j.apradiso.2016.02.008

• Pb-210 and Cs-137 flux
• Pb-210 and Cs-137 inventory
• Pb-210 transport factor
• Transylvania
• Romania

This study focuses on the determination of Pb-210 and Cs-137 fluxes from different areas in Transylvania, Romania and on the determination of transport and mass balance within the lacustrine system of Red Lake. In order to achieve this, samples were taken from six different locations (Bihor County area, Ighiel area, Red Lake area, Mluha Peatbog, Mohos Peatbog and Zanoaga Rosie Peat bog in the Semenic Mountains) throughout Romania, these being compared to the values of the Danube Delta area. The activity concentrations of the soil samples were measured by gamma spectrometry (HPGe detector) for both (210)Pbtoni, Pb-210(sup) (Ra-226) and Cs-137, while peat samples were measured by both alpha ((210)po) spectrometry (PIPS detectors) as well. The mean value for the Pb-210 flux was measured in the Danube Delta region (42 +/- 8 Bq m(-2) yr(-1)), while the highest was measured in the Semenic Peatbog (227 +/- 54 Bq m(-2) yr(-1)); the average being 132 +/- 8 Bq m(-2) yr(-1). In case of Cs-137 the mean was 298 +/- Bq m(-2) yr(-1), maximum being 1683 +/- 15 Bq m(-2) yr(-1) in case of Ighiel area and minimum being 32 +/- Bq m(-2) yr(-1) in the Danube Delta region. In case of the Red Lake, from the total inventory of 410 +/- 23 Bq m(-2) yr(-1) in the sediments, the loss by outflows is 100 +/- 12 Bq m(-2) yr(-1), the catchment to lake transfer factor being 0.84%.

• 出版日期2016-5