High natural radiation exposure in radon spa areas: a detailed field investigation in Niška Banja (Balkan region)

Zs, Zunić; Kobal, I.; Vaupotič, Janja; Kozak, Krzysztof; Mazur, Jadwiga; Birovljev, A.; Janik, Mirosław; Čeliković, I.; Ujić, P.; Demajo, A.; Krstić, G.; Jakupi, B.; Quarto, Maria; Bochicchio, Francesco

doi:10.1016/j.jenvrad.2006.05.010

Cited by 50 publications

(10 citation statements)

References 12 publications

(6 reference statements)

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“…To illustrate this, the mean radon flux is shown versus the peak radon flux for selected sites (Figure ). The mean radon flux of the SBHS appears similar to the mean values observed in other natural sites, such as volcanic [ Voltattorni et al , ], hydrothermal [ Yang et al , ], and mofette sites [ Žunić et al , ; Tuccimei and Soligo , ]. The peak radon flux of the SBHS is 1 and 2 orders of magnitude higher than the peaks measured in those same volcanic, hydrothermal, and mofette sites and in fault‐ and geology‐related sites [ Ielsch et al , ; Ciotoli et al , ; Richon et al , ], respectively, but appears compatible with peaks obtained in some American, Australian, and Chinese uranium mining sites [ Pearson and Jones , ; Bollhöfer et al , ; Mudd , ; Tan et al , ].…”

Section: Discussionsupporting

confidence: 72%

The Syabru‐Bensi hydrothermal system in central Nepal: 1. Characterization of carbon dioxide and radon fluxes

et al. 2014

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The Syabru-Bensi hydrothermal system (SBHS), located at the Main Central Thrust zone in central Nepal, is characterized by hot (30-62°C) water springs and cold (<35°C) carbon dioxide (CO 2 ) degassing areas. From 2007 to 2011, five gas zones (GZ1-GZ5) were studied, with more than 1600 CO 2 and 850 radon flux measurements, with complementary self-potential data, thermal infrared imaging, and effective radium concentration of soils. Measurement uncertainties were evaluated in the field. CO 2 and radon fluxes vary over 5 to 6 orders of magnitude, reaching exceptional maximum values of 236 ± 50 kg m À2 d À1 and 38.5 ± 8.0 Bq m À2 s À1 , with estimated integrated discharges over all gas zones of 5.9 ± 1.6 t d À1 and 140 ± 30 MBq d À1 , respectively. Soil-gas radon concentration is 40 × 10 3 Bq m À3 in GZ1-GZ2 and 70 × 10 3 Bq m À3 in GZ3-GZ4. Strong relationships between CO 2 and radon fluxes in all gas zones (correlation coefficient R = 0.86 ± 0.02) indicate related gas transport mechanisms and demonstrate that radon can be considered as a relevant proxy for CO 2 . CO 2 carbon isotopic ratios (δ 13 C from À1.7 ± 0.1 to À0.5 ± 0.1‰), with the absence of mantle signature (helium isotopic ratios R/R A < 0.05), suggest metamorphic decarbonation at depth. Thus, the SBHS emerges as a unique geosystem with significant deep origin CO 2 discharge located in a seismically active region, where we can test methodological issues and our understanding of transport properties and fluid circulations in the subsurface.

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Section: Discussionsupporting

confidence: 72%

The Syabru‐Bensi hydrothermal system in central Nepal: 1. Characterization of carbon dioxide and radon fluxes

et al. 2014

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“…In the past, Rn studies were more common than those of Tn, but recent studies in Serbian [1–3], Chinese [4, 5], Indian [6] Canadian [7–9], Japanese [10], Korean [11, 12], Hungarian [13], Slovenian [14], Irish [15, 16] and USA [17] dwellings have show that Tn can be a significant contributor to the radiation exposure. The contributions of Rn and Tn and its progeny (TnP) to radiation exposure are quite different.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of radon, thoron and thoron progeny concentration measurements

Janik¹,

Tokonami²,

Kranrod³

et al. 2013

Journal of Radiation Research

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This study examined correlations between radon, thoron and thoron progeny concentrations based on surveys conducted in several different countries. For this purpose, passive detectors developed or modified by the National Institute of Radiological Sciences (NIRS) were used. Radon and thoron concentrations were measured using passive discriminative radon-thoron detectors. Thoron progeny measurements were conducted using the NIRS-modified detector, originally developed by Zhuo and Iida. Weak correlations were found between radon and thoron as well as between thoron and thoron progeny. The statistical evaluation showed that attention should be paid to the thoron equilibrium factor for calculation of thoron progeny concentrations based on thoron measurements. In addition, this evaluation indicated that radon, thoron and thoron progeny were independent parameters, so it would be difficult to estimate the concentration of one from those of the others.

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“…It is proved that there is negative dependency between the number of smokers in the dwelling and the average radon concentration and this fact should be taken into account during the epidemiological studies [14]. In some regions of Balkan (Gornja Stubla) the indoor thoron levels are significant and should be taken into account during both radon measurements and radiation dose and risk assessment [20,22,26,27].…”

Section: Results and Conclusionmentioning

confidence: 99%

Identification and assessment of elevated exposure to natural radiation in Balkan region (Serbia)

et al. 2009

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Abstract. The paper deals with a specific aspect of a general survey, that is being carried out during last ten years in several regions of Serbia (former Yugoslavia, former Serbia and Montenegro) to assess population exposure to natural radioactivity based on geochemical and integrative pattern research approach. The originality regarding this work is related to the facts such as follows: the first identification and assessment of high areas of natural radiation in Serbia which provides insight into its regional characteristics, the interpretation of the results in terms of geological aspects, building types and human habits, the first introduction and field applicability of both (surface and volume trap) retro techniques in Serbia and assessment of doses and risks to the population in investigated high natural radiation rural communities.

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High natural radiation exposure in radon spa areas: a detailed field investigation in Niška Banja (Balkan region)

Cited by 50 publications

References 12 publications

The Syabru‐Bensi hydrothermal system in central Nepal: 1. Characterization of carbon dioxide and radon fluxes

The Syabru‐Bensi hydrothermal system in central Nepal: 1. Characterization of carbon dioxide and radon fluxes

Comparative analysis of radon, thoron and thoron progeny concentration measurements

Identification and assessment of elevated exposure to natural radiation in Balkan region (Serbia)

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