The Study of Radon and Uranium Distribution in the Groundwater at Regional Difference of Daejeon

대전지역별 지하수중의 우라늄, 라돈 농도준위 분포조사 연구

  • Yoon, Yoon-Yeol (Groundwater & Geothermal Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Cho, Soo-Young (Groundwater & Geothermal Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Lee, Kil-Yong (Groundwater & Geothermal Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Yong-Je (Groundwater & Geothermal Division, Korea Institute of Geoscience & Mineral Resources)
  • 윤윤열 (한국지질자원연구원 지하수지열연구부) ;
  • 조수영 (한국지질자원연구원 지하수지열연구부) ;
  • 이길용 (한국지질자원연구원 지하수지열연구부) ;
  • 김용제 (한국지질자원연구원 지하수지열연구부)
  • Published : 2006.03.31

Abstract

To know radon and uranium concentration variations in groundwater with regional difference, groundwaters were sampled at five different Daejeon area. Seventy-five samples were analyzed and forty samples were collected twice at drying and after raining season to know surface water effect. The average radon and uranium concentration of five areas are $270.9{\pm}152.3\;Bq/L,\;43.8{\pm}23.5\;{\mu}g/L$ at Yusung-gu, $112.9{\pm}65.8\;Bq/L,\;0.45{\pm}0.23\;{\mu}g/L$ at Seo-gu, $41.3{\pm}24.0\;Bq/L,\;4.9{\pm}11.3\;{\mu}g/L$ at Dong-gu, $131.8{\pm}99.5\;Bq/L,\;54.3{\pm}127.5\;{\mu}g/L$ at Daeduk-gu and $44.0{\pm}43.0\;Bq/L,\;8.1{\pm}11.6\;{\mu}g/L$ at Jung-gu. The mean concentrations of analyzed samples to know surface water effect were ranged from 0.5 to 640 ${\mu}g/L$ for uranium and from 0.4 to 729 Bq/L for radon. The average concentration of radon and uranium after raining season were lower than those of drying season. The mean contents of radon End Uranium at drying season were $253{\pm}14\;Bq/L,\;63{\pm}12.2\;{\mu}g/L$, and $195{\pm}11\;Bq/L,\;45.4{\pm}11.7\;{\mu}g/L$ after raining season.

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