• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.130-131
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• 2000

라돈(Rn-222)은 우라늄(U-238) 방사능계열의 원소로서 라듐(Ra-226)의 붕괴시 자연생성되는 가스상 물질이다. 화학적으로는 불활성이며 무색, 무취의 특성을 가지고 있다. 공기보다 8∼9배 무겁기 때문에 지표면 가깝게 존재하므로 인체노출이 쉬운 물질로 알려져 있다. 라돈은 최근까지도 온천 등지에서 건강에 매우 좋은 원소로 알려져 왔으나 사실은 기준치 이상의 라돈을 마시거나 호흡했을 경우, 치명적인 폐암을 유발시킨다는 것이 밝혀졌다(Doull et al, 1999) (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.50-51
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• 1999

라돈($^{222}R$)은 암석이나 토양 같은 지각물질에서 발생되는 3.82일의 반감기를 가진 자연 방사선물질로 1980년대 중반부터 미국을 비롯한 유럽의 선진국에서 환경적인 측면에서 라돈의 관심이 증대되었다. 한편, 국내에서의 라돈에 관한 연구는 실내공기질 분야에서 진행되고 있으나 대기환경적 측면에서의 종합적이고 체계적인 연구가 활발히 이루어지지 않고 있는 실정이다.(중략)

• Journal of Radiation Protection and Research
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• v.18 no.1
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• pp.37-51
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• 1993

A standard radon chamber and a radon generator adjusted by ventilation system which had used in this research were assumed to calculate theoretically the concentration of radon progeny using Jacobi model theory. On the one hand, the filter sampled from the radon standard chamber and the radon generator was measured and analysed by the alpha spectrometry method. It is clear that measured result shows a good agreement with theoretical result. Therefore, it is observed that this research can made a great contribution to more accurate internal dose assessment by alpha emission of radon progeny in indoor radon environment, and fast individual measurement and determination of concentration for radon progeny.

• Journal of Radiation Protection and Research
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• v.26 no.4
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• pp.399-408
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• 2001

The variation characteristics of radon concentration, equilibrium equivalent concentration and equilibrium factor in some houses and laboratory buildings have been studied. The variation of equilibrium factor and the unattached fraction of radon progeny with ventilation condition have been also estimated. The averages of radon concentration, equilibrium equivalent concentration and equilibrium factor were $30\;Bq\;m^{-3},\;19.6\;Bq\;m^{-3}$ and 0.65 in seven houses, while $55.0\;Bq\;m^{-3},\;31.9\;Bq\;m^{-3}$ and 0.58 in three laboratory buildings, respectively. The diurnal variation of radon concentration, equilibrium equivalent concentration and equilibrium factor in indoor showed a typical pattern that the radon concentration, equilibrium equivalent concentration and equilibrium factor increased at dawn and morning, while decreased at midday and evening. While the equilibrium factor rate deceased in the indoor environment which was well ventilated, the unattached traction of radon progeny increased. The equilibrium factor was in proportion to air pressure and humidity of indoor, whereas in Inverse proportion to temperature.

• Journal of Radiation Protection and Research
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• v.22 no.4
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• pp.243-250
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• 1997

A relative-calibration-method of solid-state-track-detector for measurement of radon in air has been developed, and the concentration of radon in each room of a 15th-floor-apartment was measured by using the relative calibrated SSTD. There is a tendency to decrease the concentration of radon when the floor is higher, but the main factor to reduce the concentration of radon in room appeared to be ventilation rate. Average concentration of radon of the 15th-floor-apartment was $1.50{\pm}0.51pCi/l$, and the highest and the lowest concentration of radon were $2.68{\pm}0.32pCi/l$, $0.69{\pm}0.16pCi/l$ respectively.

• Journal of Korean Society of Environmental Engineers
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• v.28 no.6
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• pp.588-595
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• 2006

Indoor radon($^{222}Rn$) concentrations of subway stations in Seoul area were measured to survey the environmental indoor radon levels and to identify sources of radon. The radon concentration of indoor air by method of long-term measuring with a-track detector were surveyed at 232 subway stations from 1998 to 2004. And the radon concentration in ground-water was measured with a method of alpha particle counting. To trace main source of radon, 8 out of 232 stations were selected and their radon concentrations in tunnel and on platform were analyzed. Total geometric mean and arithmetic mean of radon concentrations in all stations from 1998 to 2004 were $1.40{\pm}1.94pCi/L,\;1.65{\pm}1.07$ respectively. Geometric means of radon concentrations on platform and concourse were $1.54{\pm}1.96pCi/L,\;1.23{\pm}1.88pCi/L$ respectively, with higher concentration at the platform than at the concourse. The geological structure was significantly correlated to the indoor radon concentration in subway stations region. Radon concentrations of adjacent tunnel and ground-water of subway station was significantly correlated to the indoor radon concentration in subway stations. And There was a significant difference in radon concentration, depending on the depth levels in platform of subway stations(p<0.05).

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.297-298
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• 1999

라돈과 라돈 낭핵종은 예전부터 생활환경 중에 존재해 왔던 것으로 최근 산업화등으로 인해 급격히 증가하는 다른 오염물질과는 그 발생원이 다소 차이가 있지만 폐암, 위암등의 암을 유발시키는 중요한 요인이라는 것이 미국, 캐나다, 체코의 우라늄 광산 및 스웨덴, 영국의 비우라늄 광산에서 확인된 바 있어 그 관리의 중요성이 나날이 대두되고 있다(Guimond 등, 1979; UN, 1977).(중략)

• 대한방사선방어학회:학술대회논문집
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• 2011.04a
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• pp.64-65
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• 2011

• 대한방사선방어학회:학술대회논문집
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• 2010.04a
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• pp.104-105
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• 2010

• Journal of the Korean Society of Radiology
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• v.9 no.6
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• pp.421-424
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• 2015

In this study, To subject the constructed at N-kindergarten in G-city, the position is closed window and opened window was measured using a measuring instrument for radon. The measured results indicate that the measurement was carried out in concentrations of radon gas measured at N-kindergarten is low than United States in the radon concentration in air public 4pCi called radon gas baseline maximum allowable concentrations. As a result, radon exposure is not a problem, but when the accumulation radon gas in the lungs, get damaged same lung cancer. Be defensive of kindergarten windows open for ventilation and dust removal be possible to reduce the exposure.