Radium-226 concentration in spring water sampled in high radon regions

Онищенко, А. Д.; Zhukovsky, Michael; Veselinović, N.; Žunić, Zora S.

doi:10.1016/j.apradiso.2009.09.050

Cited by 31 publications

(12 citation statements)

References 5 publications

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“…High radium levels were found in deep geothermal aquifers; e.g., values up to 3.66 Bq L − 1 have been reported in some thermal springs from Spain (Ródenas et al, 2008). Radium mobility may be influenced by chemical parameters, including pH (Szabo et al, 2004), salinity (Sturchio and Zapecza, 1987), redox conditions (Szabo and Zapecza, 1987;Vinson et al, 2009), and major dissolved ions such as chloride, sulfate, and carbonates that can react with radium by forming weak complexes (Onishchenko et al, 2010). The hydrodynamic features of the aquifers may also influence the distribution of radionuclides.…”

Section: Introductionmentioning

confidence: 96%

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Dragović

Janković-Mandić

Dragović

et al. 2012

Journal of Geochemical Exploration

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Section: Introductionmentioning

confidence: 96%

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Dragović

Janković-Mandić

Dragović

et al. 2012

Journal of Geochemical Exploration

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“…6, where the radon concentration is plotted versus major dissolved ions identified in the two investigated geothermal aquifers, which proved to have the most different hydrogeochemical features. On the other hand, once dissolved in groundwater, radium is available for different chemical reactions that lead to its wide incorporation into carbonates, sulfates, hydroxides, oxides, and salts (Onishchenko et al. 2010).…”

Section: Discussionmentioning

confidence: 99%

“…2001), redox conditions (Szabo & Zapecza 1987; Vinson et al. 2009), and major dissolved ions such as chloride, sulfate, and carbonate that can react with radium by forming weak complexes (Onishchenko et al. 2010).…”

Section: Introductionmentioning

confidence: 99%

“…However, the mechanisms of this control are not fully understood. According to some studies, radium mobility may be influenced by chemical parameters, including pH (Szabo et al 2005), salinity (Sturchio et al 2001), redox conditions (Szabo & Zapecza 1987;Vinson et al 2009), and major dissolved ions such as chloride, sulfate, and carbonate that can react with radium by forming weak complexes (Onishchenko et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Radon and radium content of some cold and thermal aquifers from Bihor County (northwestern Romania)

Roba¹,

Codrea²,

Moldovan³

et al. 2010

Geofluids

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In the present study, two of the major naturally occurring radionuclides ( 226 Ra and 222 Rn) were analyzed in water samples from shallow, medium-depth, and deep geothermal aquifers, all of which are located in Bihor County, northwestern Romania. Here, the results of radon and radium measurements, performed from 2008 to 2009 in 50 locations, are reported. Radon proved to have a wide range of activity, with values from 4.5 to 110.8 Bq l )1 for shallow aquifers, from 9.3 to 106.0 Bq l )1 for medium-depth aquifers, and from 10.1 to 34.8 Bq l )1 for deep geothermal aquifers. The shallow aquifers have lower radium concentrations (0.06 to 0.48 Bq l )1 ), compared to medium-depth aquifers (0.1 to 0.52 Bq l )1 ) and deep geothermal aquifers (0.27 to 1.8 Bq l )1 ). The principal aim was a thorough investigation into the possible correlations between the occurrence of radon and radium in different aquifers and the hydrogeological, hydrogeochemical, and geothermal features of the area. Besides the direct link between the occurrence of uranium and thorium and the 226 Ra and 222 Rn contents in groundwater, the measurements we performed have allowed us to identify a secondary control on radionuclide distributions caused by the adsorption of dissolved radium onto clay minerals in exchange for sodium (for the sandy clay aquifer of Sȃ cuieni), the high competition for adsorption sites in aquifers with high concentrations of dissolved calcium and magnesium (for the limestone dolomite aquifer of Oradea), and the role of thermal processes.

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“…Radon is transported to the surface and it can easily diffuse into the atmosphere, and may produce elevated radon levels in places such as thermal spas. The presence of radium in springs can be an indicator of elevated indoor radon concentration in the dwellings of the surrounding area, and radium concentration measurements in springs could serve as one of the initial stages of a radon survey (Onishchenko et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Indoor radon in Tunisian spas

Labidi¹,

Al-Azmi

Salah

2012

Radioprotection

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Indoor radon concentrations were measured in four well-known spas of Tunisia using nuclear track detectors. The radon concentrations in these spas were found to be in the range of 19 − 870 Bq.m -3 . The equilibrium factor F between radon and its progeny was found to vary in the range of 0.2 -0.5, depending upon the ventilation rates within the buildings of the spas. Using the exposure-dose conversion factor, the effective doses to patients and workers were estimated and the dose was found to vary in the range 3.7 × 10 -3 − 12.5 × 10 -3 mSv.y -1 and 0.45 − 1.5 mSv.y -1 for patients and workers, respectively. These values are well inside the limit recommended for the annual dose limit of 20 mSv.y -1 for an occupational worker. The radium content in the groundwater of all four spas was measured and the results showed no correlation between the 226 Ra concentration in water and radon concentration in indoor air of the investigated spas.

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Radium-226 concentration in spring water sampled in high radon regions

Cited by 31 publications

References 5 publications

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Radon and radium content of some cold and thermal aquifers from Bihor County (northwestern Romania)

Indoor radon in Tunisian spas

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