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Distribution of 90Sr Activities in the Environmental Radiation Samples of Jeju Island, Korea

  • Han, Chung Hun (Institute for Nuclear Science and Technology, Jeju National University) ;
  • Park, Youn Hyun (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Lee, Young Gyu (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Park, Jae Woo (Department of Nuclear & Energy Engineering, Jeju National University)
  • Received : 2015.07.17
  • Accepted : 2016.08.23
  • Published : 2016.12.31

Abstract

Background: This work was to get information about $^{90}Sr$ contamination of the environment by using soil and moss from selected areas in Jeju Island, Korea. Materials and Methods: The activities of $^{90}Sr$ in soil and moss samples were investigated at nine locations of Jeju island, Korea. The soil samples have been collected at 4 sites of Jeju island during June to August of 2013, analyzed for vertical distribution of $^{90}Sr$ activities. The moss samples have been collected at 5 sites of Jeju island during November of 2011 to June of 2012, and analyzed for radioactive $^{90}Sr$. Results and Discussion: The $^{90}Sr$ vertical concentrations in the investigated soil samples were 2.77 to $18.24Bq{\cdot}kg^{-1}$ in eastern part, 1.69 to $18.27Bq{\cdot}kg^{-1}$ in northern part, 3.76 to $13.46Bq{\cdot}kg^{-1}$ in the western part and 1.09 to $8.70Bq{\cdot}kg^{-1}$ in the southern part of the Mt. Halla in Jeju island, respectively. Activities of $^{90}Sr$ show the highest value at the surface soil and decrease with depth. The activity concentration measured was in the range of 79.6 to $363Bq{\cdot}kg^{-1}$ -dry moss. Conclusion: This material is expected to be basis reference for survey of environmental radioactivity in Jeju Island.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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