scholarly journals Analysis of 7Be and 210Pb concentration and 7Be/210Pb activity ratio in ground level air in Palermo (Italy)

2019 ◽  
Vol 174 (11-12) ◽  
pp. 998-1007
Author(s):  
Salvatore Basile ◽  
Riccardo Burlon ◽  
Elio Tomarchio
Keyword(s):  
Activity Ratio ◽  
Ground Level ◽  
210Pb Activity ◽  
210Pb Concentration ◽  
Ground Level Air

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.

7Be to 210Pb concentration ratio in ground level air in Belgrade area

2005 ◽  
Vol 79 (3) ◽  
pp. 297-307 ◽  
Author(s):  
D. Todorovic ◽  
D. Popovic ◽  
G. Djuric ◽  
M. Radenkovic
Keyword(s):  
Concentration Ratio ◽  
Ground Level ◽  
210Pb Concentration ◽  
Ground Level Air

7Be to 210Pb concentration ratio in ground level air in Málaga (36.7°N, 4.5°W)

2009 ◽  
Vol 92 (1) ◽  
pp. 49-57 ◽  
Author(s):  
C. Dueñas ◽  
M.C. Fernández ◽  
S. Cañete ◽  
M. Pérez
Keyword(s):  
Concentration Ratio ◽  
Ground Level ◽  
210Pb Concentration ◽  
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

Comparison of Beryllium-7 and Cæsium-137 Radioactivity in Ground-Level Air

Nature ◽  
1961 ◽  
Vol 191 (4787) ◽  
pp. 454-456 ◽  
Author(s):  
P. F. GUSTAFSON ◽  
M. A. KERRIGAN ◽  
S. S. BRAR
Keyword(s):  
Ground Level ◽  
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.

scholarly journals Uncertainties in assessing the environmental impact of amine emissions from a CO<sub>2</sub> capture plant

2014 ◽  
Vol 14 (16) ◽  
pp. 8533-8557 ◽  
Author(s):  
M. Karl ◽  
N. Castell ◽  
D. Simpson ◽  
S. Solberg ◽  
J. Starrfelt ◽  
...  
Keyword(s):  
Drinking Water ◽  
Environmental Impact ◽  
Lake Water ◽  
Ground Level ◽  
Model Framework ◽  
Study Region ◽  
Fugacity Model ◽  
Modelling Framework ◽  
Degradation Rates ◽  
Ground Level Air

Abstract. In this study, a new model framework that couples the atmospheric chemistry transport model system Weather Research and Forecasting–European Monitoring and Evaluation Programme (WRF-EMEP) and the multimedia fugacity level III model was used to assess the environmental impact of in-air amine emissions from post-combustion carbon dioxide capture. The modelling framework was applied to a typical carbon capture plant artificially placed at Mongstad, on the west coast of Norway. The study region is characterized by high precipitation amounts, relatively few sunshine hours, predominantly westerly winds from the North Atlantic and complex topography. Mongstad can be considered as moderately polluted due to refinery activities. WRF-EMEP enables a detailed treatment of amine chemistry in addition to atmospheric transport and deposition. Deposition fluxes of WRF-EMEP simulations were used as input to the fugacity model in order to derive concentrations of nitramines and nitrosamine in lake water. Predicted concentrations of nitramines and nitrosamines in ground-level air and drinking water were found to be highly sensitive to the description of amine chemistry, especially of the night-time chemistry with the nitrate (NO3) radical. Sensitivity analysis of the fugacity model indicates that catchment characteristics and chemical degradation rates in soil and water are among the important factors controlling the fate of these compounds in lake water. The study shows that realistic emission of commonly used amines result in levels of the sum of nitrosamines and nitramines in ground-level air (0.6–10 pg m−3) and drinking water (0.04–0.25 ng L−1) below the current safety guideline for human health that is enforced by the Norwegian Environment Agency. The modelling framework developed in this study can be used to evaluate possible environmental impacts of emissions of amines from post-combustion capture in other regions of the world.

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