scholarly journals Temporal changes of beryllium-7 and lead-210 in ground level air in Serbia

2014 ◽  
Vol 68 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Marija Jankovic ◽  
Dragana Todorovic ◽  
Jelena Nikolic ◽  
Milica Rajacic ◽  
Gordana Pantelic ◽  
...  
Keyword(s):  
Activity Ratio ◽  
Ground Level ◽  
137Cs Activity ◽  
Summer Period ◽  
210Pb And 137Cs ◽  
Activity Concentrations ◽  
210Pb Activity ◽  
Project Monitoring ◽  
Lead 210 ◽  
Ground Level Air

7Be, 210Pb and 137Cs activity concentrations in ground level air at five monitoring stations (MS Vinca, Zeleno Brdo, Zajecar, Vranje and Zlatibor) in Serbia were determined during the period from May 2011. to September 2012., as part of the project monitoring of Serbia. Activity of the radionuclides in air was determined on an HPGe detector (Canberra, relative efficiency 20 %) by standard gamma spectrometry. Concentrations of cosmogenic 7Be, ranged from 1.5 to 8.8 mBq m-3 and exhibit maxima in the spring/summer period. The maximum concentrations for 210Pb were generally obtained in the fall for all investigated locations, and concentrations were in range 3.6 - 30 ? 10-4 Bq m-3. The activity concentrations of anthropogenic 137Cs in ground level air, during the observed period, were at level 0.3 - 8 ?Bq m-3. The variations in 7Be/210Pb activity ratio for the investigated stations are also presented.

Resuspension processes controll variations of 137Cs activity concentrations in the ground-level air

2012 ◽  
Vol 293 (2) ◽  
pp. 595-599 ◽  
Author(s):  
I. Sýkora ◽  
P. P. Povinec ◽  
L. Brest’áková ◽  
M. Florek ◽  
K. Holý ◽  
...  
Keyword(s):  
Ground Level ◽  
137Cs Activity ◽  
Activity Concentrations ◽  
Ground Level Air

Radionuclides in deposition in the Ignalina NPP region in 2005

Open Physics ◽  
2006 ◽  
Vol 4 (4) ◽  
Author(s):  
Rimvydas Jasiulionis ◽  
Andrej Rožkov
Keyword(s):  
Nuclear Power ◽  
Particle Deposition ◽  
Activity Concentration ◽  
Ground Level ◽  
137Cs Activity ◽  
Hysplit Model ◽  
Solubility In Water ◽  
137Cs Activity Concentration ◽  
Chernobyl Npp ◽  
Ground Level Air

AbstractResults of radionuclide activity concentration measurements in deposition and ground-level air conducted at the station of the Institute of Physics situated 3.5 km from the Ignalina Nuclear Power Plant (Ignalina NPP) in 2005 are analyzed. Atmospheric depositional fluxes of 7Be, 60Co and 137Cs are estimated. Radionuclide particle deposition rates are calculated. The Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model of the global dispersion and deposition is used to explain variations in the 137Cs activity concentration in the ground-level air in the Ignalina NPP region in 2005. An increase in the 137Cs activity concentration of up to 17.4 µBq m−3 on 30 October-5 November is studied. Modelling results show that the Chernobyl NPP Unit 4 Sarcophagus and the radiocaesium resuspension from the Chernobyl NPP accident polluted regions are sources of 137Cs to the environment of the Ignalina NPP. Results on solubility in water of aerosols — carriers of 137Cs — are discussed.

Local Ground-Level Air Concentrations of Lead-210 at Winchester, Massachusetts

Nature ◽  
1966 ◽  
Vol 210 (5036) ◽  
pp. 579-580 ◽  
Author(s):  
B. SHLEIEN ◽  
A. G. FRIEND
Keyword(s):  
Ground Level ◽  
Lead 210 ◽  
Ground Level Air ◽  
Air Concentrations

scholarly journals Sedimentation rates in the Lake Qattinah using 210Pb and 137Cs as geochronometer

2014 ◽  
Vol 41 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Eskander Alhajji ◽  
Iyas Ismail ◽  
Mohammad Al-Masri ◽  
Nouman Salman ◽  
Mohammad Al-Haleem ◽  
...  
Keyword(s):  
Sediment Cores ◽  
Past Century ◽  
Sedimentation Rates ◽  
Accumulation Rates ◽  
210Pb And 137Cs ◽  
The Past ◽  
Activity Concentrations ◽  
210Pb Activity ◽  
Constant Rate ◽  
210Pb Method

Abstract The constant rate of supply (CRS) of excess 210Pb model was successfully applied to assess 210Pb data of two sediment cores from the lake Qattinah, Syria. Gamma spectrometry was used to determine 137Cs and 210Pb activity concentrations. The bottom of the cores was 210Pb-dated to years 1907 and 1893. The accumulation rates were determined using 210Pb method and found to vary similarly in both cores from 0.10 ± 0.01 to 3.78 ± 0.57 kg m−2 y−1 during the past century. 137Cs was used as an in-dependent chronometer. The two distinct peaks observed on the 137Cs record of both cores, corresponding to 1965 and 1986, have allowed a successful validation of the CRS model.

scholarly journals MEASUREMENTS OF LEAD-210 ACTIVITY CONCENTRATION IN THE GROUND-LEVEL AIR IN FINLAND AND BULGARIA

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Jussi Paatero ◽  
Blagorodka Veleva ◽  
Elena Hristova ◽  
Juha Hatakka
Keyword(s):  
Activity Concentration ◽  
Ground Level ◽  
Lead 210 ◽  
Ground Level Air

Strontium-90, strontium-89, plutonium-239, and plutonium-238 concentrations in ground-level air, 1964-1969

1970 ◽  
Vol 4 (7) ◽  
pp. 598-602 ◽  
Author(s):  
Bernard Shleien ◽  
Joseph A. Cochran ◽  
Paul J. Magno
Keyword(s):  
Ground Level ◽  
Strontium 90 ◽  
Ground Level Air
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