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1.

001-es BibID:BIBFORM005758
Első szerző:Bihari Árpád (környezetkutató)
Cím:Examination of the effect of particle size on the radionuclide content of soils / Á. Bihari, Z. Dezső
Dátum:2008
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
137Cs
particle size distribution
soil erosion
Megjelenés:Journal of Environmental Radioactivity. - 99 : 7 (2008), p. 1083-1089. -
További szerzők:Dezső Zoltán (1947-) (fizikus)
Internet cím:DOI
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2.

001-es BibID:BIBFORM044682
Első szerző:Papp Zoltán (fizikus)
Cím:Significant radioactive contamination of soil around a coal-fired thermal power plant / Papp Z., Dezső Z., Daróczy S.
Dátum:2002
ISSN:0265-931X
Megjegyzések:Soil samples were collected around a coal-fired power plant from 81 different locations.Brown coal, unusually rich in uranium, is burnt in this plant that lies inside the confines of asmall industrial town and has been operational since 1943. Activity concentrations of theradionuclides 238U, 226Ra, 232Th, 137Cs and 40K were determined in the samples. Considerablyelevated concentrations of 238U and 226Ra have been found in most samples collected withinthe inhabited area. Concentrations of 238U and 226Ra in soil decreased regularly withincreasing depthat many locations, whichcan be explained by fly-ashfallout. Concentrationsof 238U and 226Ra in the top (0?5 cm depth) layer of soil in public areas inside the town are 4.7times higher, on average, than those in the uncontaminated deeper layers, which means there isabout 108 Bq kg-1 surplus activity concentration above the geological background. A highemanation rate of 222Rn from the contaminated soil layers and significant disequilibriumbetween 238U and 226Ra activities in some kinds of samples have been found.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
radioactive contamination
soil
coal-fired power plant
238U
226Ra
Megjelenés:Journal Of Environmental Radioactivity. - 59 : 2 (2002), p. 191-205. -
További szerzők:Dezső Zoltán (1947-) (fizikus) Daróczy Sándor (fizikus)
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DOI
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3.

001-es BibID:BIBFORM004781
Első szerző:Singh, Manmohan
Cím:Variation of indoor radon progeny concentration and its role in dose assessment / Manmohan Singh, Kulwant Singh, Surinder Singh, Papp Zoltán
Dátum:2008
Megjegyzések:Instantaneous measurements of equilibrium equivalent concentration of radon (EECRn) were taken over a period of 1 year in 2004 in a typical house at Amritsar city, located in the northwest part of India. A method based on absolute beta counting subsequent to grab aerosol sampling was used. During that year, EECRn varied between 1.56 Bq m-3 and 22.77 Bq m-3 with average value of 8.76 Bq m-3. EECRn decreased with the transition from winter to summer and vice versa, having a negative correlation with outdoor temperature. The use of mechanical ventilation, under normal living conditions during summer, caused an extra decrease in the concentrations. The variations with temperature and mechanical ventilation are discussed. Some major issues related to the uncertainties in dose calculations caused by the lack of knowledge of equilibrium factor and ignoring the effect of life style on the radon and its progeny concentrations are discussed.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
radon
dózis
radon bomlástermékek
Megjelenés:Journal of Environmental Radioactivity. - 99 (2008), p. 539-545. -
További szerzők:Singh, Kulwant Singh, Surinder Papp Zoltán (1959-) (fizikus)
Internet cím:elektronikus változat
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4.

001-es BibID:BIBFORM104592
035-os BibID:(cikkazonosító)106962 (Scopus)85134294424
Első szerző:Sóki Erzsébet (környezetkutató)
Cím:Origin and transport of radon in a dry and in a wet mofette of Covasna, Romania / Erzsébet Sóki, Sándor Gyila, István Csige
Dátum:2022
ISSN:0265-931X
Megjegyzések:The appearances of significant efflux of carbon dioxide through soil surfaces is a frequent natural phenomena in the wider vicinity of relatively young volcanic fields. These mofettes are often utilised as dry carbon dioxide spas to treat patients suffering from cardiovascular diseases. The carbon dioxide always carries some naturally occurring radioactive radon gas with it. On the one hand this radon gas might pose some radiation risk for the patients and staff of such carbon dioxide spas, on the other hand it may be used as a natural tracer for the study of transport of its carrier gas in the subsurface and in the pools. In this work we have measured the spatial variation of radon activity concentration in the gas phase of the carbon dioxide gas pool of the Cardiology Hospital and in the gas and water phases of the Hell-Mud, which is a wet open pit mofette in the city of Covasna. We have developed a hydro- and gas-geological conceptual and mathematical model with which we were able to describe the measured spatial and temporal behaviour of radon gas concentration. We have found that the relatively low radon concentrations at the bottom of these pools can be explained by removing the radon content of water by intense bubbling degassing of the oversaturated carbonated waters.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Mofette
Radon
Carbon dioxide
Model calculation
Subsurface flow
Megjelenés:Journal Of Environmental Radioactivity. - 251-252 (2022), p. 106962. -
További szerzők:Gyila Sándor Csige István (1962-) (fizikus)
Pályázati támogatás:2.3.2-15-2016-00009
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TKP2021-NKTA-32
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Internet cím:Szerző által megadott URL
DOI
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