Classification and mapping of radon-affected areas in Germany

Kemski, J.; Klingel, R.; Siehl, A.

doi:10.1016/s0160-4120(96)00185-7

Cited by 51 publications

(21 citation statements)

References 3 publications

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“…Weathering and alteration processes are also capable to withdraw nuclides of the uranium decay chain from the sedimentary system and enable a selective accumulation or degradation under suitable conditions (Kemski et al, 1996). Changes of the sediment dose rate over burial times have an impact on age estimates but they are hardly quantifiable over large time scales.…”

Section: Dosimetrymentioning

confidence: 99%

Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Zander

Hilgers

2013

Clim. Past

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Abstract. This study tests the paleomagnetic and proxy-data based Mid- to Upper Pleistocene sediment deposition history of Lake El'gygytgyn by applying different approaches of luminescence dating techniques on sediment cores taken from the centre of the 175 m deep lake. For dating polymineral and quartz fine grains (4–11 μm grain size range) were extracted from nine different levels from the upper 28 m of sediment cores 5011-1A and 5011-1B. According to the independent age model, the lowest sample from 27.8–27.9 m below lake bottom level correlates to the Brunhes-Matuyama (B/M) reversal. Polymineral sub-samples were analysed by infra-red stimulated luminescence (IRSL) and post-IR IRSL measured at 290 °C (pIRIR290) using single aliquot regenerative dose (SAR) sequences. SAR protocols were further applied to measure the blue light optically stimulated luminescence (OSL) and thermally-transferred OSL (TT-OSL) of fine-grained quartz supplemented by a multiple aliquot approach. Neither low temperature IRSL measurements at 50 °C nor any OSL dating approach on quartz yielded reliable results. Deconvolution of their dose response curves revealed a pseudo-increase of the dose response curves and explains the observed underestimation. The pIRIR protocol applied to polymineral fine grains was the only luminescence technique able to provide dating results of acceptable accuracy up to ca. 700 ka when correlated to the existing proxy-data and paleomagnetic based age record. We present the potential and limits of the different dating techniques and a correlation of pIRIR290 results with the proxy-data based age model.

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Section: Dosimetrymentioning

confidence: 99%

Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Zander

Hilgers

2013

Clim. Past

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“…In the literature, the dryness of the soil resulted in a decrease in radon transport (Klausman and Jaacks 1987), and the soil moisture content up to some extent (about 15%) increased the radon concentration in soil (Kemski et al 1996). In this study, although we could not set the moisture content of the samples identically because measuring was done in situ, the moisture content of soil was 3-25%, with an average of 13% and standard deviation of 5%, which is no drastic difference between them.…”

Section: Radon In Soilmentioning

confidence: 99%

Measurement and Spatial Analysis of Uranium-238 and Radon-222 of Soil in Seoul

Oh¹,

Shin²,

Jeon³

2017

Journal of Soil and Groundwater Environment

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Identification of radon in soil provides information on the areas at risk for high radon exposure. In this study, we measured uranium-238 and radon-222 concentrations in soil to assess their approximate levels in Seoul. A total of 246 soil samples were taken to analyze uranium with ICP-MS, and 120 measurements of radon in soil were conducted with an in-situ radon detector, Rad7 at a depth of 1-1.5 m. The data were statistically analyzed and mapped, layered with geological classification. The range of uranium in soil was from 0.0 to 8.5 mg/kg with a mean value of 2.2 mg/kg, and the range of radon in soil was from 1,887 to 87,320 Bq/m 3 with a mean value of 18,271 Bq/m 3. The geology had a distinctive relationship to the uranium and radon levels in soil, with the uranium and radon concentrations in soils overlying granite more than double those of soils overlying metamorphic rocks.

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“…Therefore, the development of a good geogenic radon potential system is highly valued as long as the regional assessment of radon risk is demanded. Kemski et al (1996) suggested a radon ranking matrix by taking soil radon concentration and soil permeability into account of radon potential. This system, however, is highly affected by meteorological factors, particularly the variation of soil moisture conditions.…”

Section: Development Of Radon Potentialmentioning

confidence: 99%

Assessment of soil radon potential in Hong Kong, China, using a 10-point evaluation system

et al. 2012

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Radon and its progenies have been ranked second of being responsible for lung cancer in humans. Hong Kong has four major groups of uranium-rich plutonic and volcanic rocks and is suffering from radon emanated therefrom. However, there is a lack of radon potential maps in Hong Kong to resolve the spatial distribution of radonprone areas. A ten-point radon potential system was developed in Germany (2005) to predict radon potential using both the in situ geogenic and geographic parameters under hierarchical ranking. Primarily, the ten-point system requires the desk study of the geological environment of sampling sites, which has an advantage of saving resources and manpower in extensive radon potential mapping over the traditional soil radon concentration sampling method. This paper presents a trial of radon potential mapping in Hong Kong to further verify the system. Despite some slight departures, the system demonstrates an acceptable correlation with soil radon concentrations (R 2 = 0.62-0.66) from 768 samples of mainly intermediate radon potential. Hong Kong has a mean soil radon concentrations of 58.9 kBqm -3 , while the radon potential from the ten-point system achieves an average of 4.93 out of 10 over the territory. The vicinity of fault zone showed high soil radon concentrations and potentials, which were conducive to uranium enrichment and rapid soil-gas diffusion near faults. High uranium-238 content in soil was found to cause high soil radon concentration with a large R 2 , 0.84. The Jurassic granite and volcanic crystal tuff cover more than 85 % of the whole Hong Kong area, and they show relatively high radon concentrations (Geometric mean 83 and 49 kBqm -3 , respectively) which are associated with their high uranium contents (Geometric mean 234 and 197 Bqkg -1 , respectively). While indoor radon concentration is an important factor for radon risk assessment, this study has not considered the correlation between indoor radon concentration and radon potential. The reason is that almost all buildings in Hong Kong are high-rise buildings where indoor radon concentrations are governed only by the radium content in the building materials and the ventilation conditions.

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Classification and mapping of radon-affected areas in Germany

Cited by 51 publications

References 3 publications

Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Measurement and Spatial Analysis of Uranium-238 and Radon-222 of Soil in Seoul

Assessment of soil radon potential in Hong Kong, China, using a 10-point evaluation system

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Classification and mapping of radon-affected areas in Germany

Cited by 51 publications

References 3 publications

Potential and limits of OSL, TT-OSL, IRSL and pIRIR&lt;sub&gt;290&lt;/sub&gt; dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Potential and limits of OSL, TT-OSL, IRSL and pIRIR&lt;sub&gt;290&lt;/sub&gt; dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Measurement and Spatial Analysis of Uranium-238 and Radon-222 of Soil in Seoul

Assessment of soil radon potential in Hong Kong, China, using a 10-point evaluation system

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Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia

Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia