Average daily and annual courses of222Rn concentration in some natural medium

Holý, Karol; Böhm, R.; Polášková, Alexandra; Štelina, J.; Holá, O.; Sýkora, I.

doi:10.1007/bf02040466

Cited by 8 publications

(8 citation statements)

References 6 publications

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“…rural, urban or 1 0 / 1 5 / 2 0 0 3 1 2 / 8 / 2 0 0 4 2 / 1 / 2 0 0 6 3 / 2 8 / 2 0 0 7 5 / 2 1 / 2 0 0 8 7 / 1 5 / 2 0 0 9 9 / 8 / 2 0 1 0 1 1 / 2 / 2 0 1 1 1 2 / 2 6 / 2 0 1 2 2 / 1 9 / 2 0 1 4 Holý et al, 1996). The differences in the 222 Rn activity concentrations may be caused by different mixing processes in the lower atmosphere at these stations.…”

Section: Rn and 210 Pb Variationsmentioning

confidence: 98%

“…A large volume scintillation chamber (4.5 L) was used for the radon measurements. The air for the analysis was continuously sucked through the detector with a flow rate of 0.5 L/min (Holý et al, 1996) at a height of 1.5 m above the ground surface. The sensitivity of the scintillation chamber is 0.005 s À1 for the 222 Rn activity of the air of 1 Bq m À3 .…”

Section: Analysesmentioning

confidence: 99%

“…Cosmogenic 7 Be, primordial 40 K, radiogenic 210 Pb and anthropogenic 137 Cs have been studied in the Bratislava air since 1977 (Povinec et al, 1988;Bel a n et al, 1992;Durana et al, 1996;Simon et al, 2009;Povinec et al, 2012a, b;Sýkora et al, 2012), and investigations of radiogenic 222 Rn have been carried out from 1987 (Bel a n et al., 1992;Holý et al, 1996Holý et al, , 2010. In the present paper we study radionuclide variations ( 7 Be, 40 K, 137 Cs, 210 Pb and 222 Rn) in the Bratislava air for the period from 2001 to 2015.…”

Section: Introductionmentioning

confidence: 96%

“…Radiogenic radionuclides which are products of 222 Rn and 220 Rn decays ( 218 Po, 214 Pb,214 Bi,214 Po, 210 Pb and 210 Po) are valuable natural tracers for the study of atmospheric and soil-atmospheric processes, in particular in the boundary layer near the ground level (Porstend} orfer et al, 1991;Due nas et al, 1996;Holý et al, 1996;Sesana et al, 2003;Zahorowski et al, 2004;Baskaran, 2011). Atmospheric levels of 210 Pb have been of considerable interest as a source of 210 Po, which contributes a significant portion of the natural radiation dose to man.…”

Section: Introductionmentioning

confidence: 99%

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Long-term variations of radionuclides in the Bratislava air

Sýkora

Holý

Ješkovský

et al. 2017

Journal of Environmental Radioactivity

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Section: Rn and 210 Pb Variationsmentioning

confidence: 98%

Section: Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Long-term variations of radionuclides in the Bratislava air

Sýkora

Holý

Ješkovský

et al. 2017

Journal of Environmental Radioactivity

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“…Figure 3 shows the hourly averaged diurnal change of 222 Rn concentration on the routes: (a) Moscow–Khabarovsk (TE, Travelling East) and (b) Khabarovsk–Moscow (TW, Travelling West). A daily cycle of 222 Rn and its progenies, i.e., 218 Po, 214 Pb, 214 Bi, etc., is most pronounced in summer during dry anticyclonic weather conditions [ Holy et al , 1996]. Under these conditions frequent surface temperature inversions develop at night until the early morning hours, which impede vertical mixing and trap surface emissions in the stable shallow PBL.…”

Section: Resultsmentioning

confidence: 99%

Trace gas measurements along the Trans‐Siberian railroad: The TROICA 5 expedition

et al. 2002

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[1] The chemical composition of the surface boundary layer over the Eurasian continent is still an area of high uncertainty. In the framework of the Trans-Siberian Observations Into the Chemistry of the Atmosphere (TROICA) project, measurements of O 3 , NO, NO 2 , CO, CO 2 , CH 4 , 222 Rn, J(NO 2 ), and black carbon aerosol were carried out on the TransSiberian railroad during June-July 1999. Boundary layer data over more than 16,000 km, from Kirov ($58°N, 49°E; 972 km east of Moscow) to Khabarovsk ($48°N, 135°E) and back to Moscow, were obtained without significant contamination, emphasizing the potential of using the Trans-Siberian railroad system for atmospheric measurements. The 222 Rn and CO 2 concentrations were determined for the first time using our laboratory wagon. The diurnal variations of these gases and of CH 4 due to micrometeorological conditions, as well as their dependence on various soil sources and vegetation types, were used to estimate ecosystem fluxes of CO 2 and CH 4 . The highest soil flux of CH 4 was 70 ± 35 m mol m À2 h À1 for the wet habitats of the West Siberian lowlands, and the lowest CH 4 flux was 3.2 ± 1.6 m mol m À2 h À1 for drier habitats of eastern Siberia. Although the wet tundra emissions found between 67°and 77°N are higher than in comparable environments at much lower latitudes [Christensen et al., 1995], boreal wetlands in Siberia at 50°-60°N represent a very important player in the global methane budget. The CO 2 density fluxes exhibited the opposite to CH 4 fluxes tendency. Ozone mixing ratios varied from a few nmol/mol during nighttime inversions to more than 60 nmol/mol during the day. These values were generally higher than during the 1996 summer campaign (TROICA 2). CH 4 and CO levels followed the pattern observed during TROICA 2; elevated levels of CH 4 with a mean mixing ratio of 1.97 ± 0.009 mmol/mol were found over the West Siberian lowlands, decreasing to 1.88 ± 0.13 mmol/mol toward East Siberia. Conversely, while background CO levels of the West Siberian wetlands were generally below 140 nmol/mol, high CO concentrations, once even exceeding 2 mmol/mol, were registered east of Chita ($52°N, 113°E), as a consequence of forest and other vegetation fires, which significantly affect the chemical composition of the air over parts of Russia.

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Radon in environment

Bujdosó

1999

J Radioanal Nucl Chem

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Average daily and annual courses of222Rn concentration in some natural medium

Cited by 8 publications

References 6 publications

Long-term variations of radionuclides in the Bratislava air

Long-term variations of radionuclides in the Bratislava air

Trace gas measurements along the Trans‐Siberian railroad: The TROICA 5 expedition

Radon in environment

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