Influence of Radioactive Contamination to Agricultural Products Due to Dry and Wet Deposition Processes During a Nuclear Emergency

원자력 사고 중 핵종의 건. 습침적에 따른 농작물 오염 영향

  • Published : 2002.09.30

Abstract

Combined with deposition model onto the ground of radionuclides, the influence of radioactive contamination to agricultural products was analyzed due to wet deposition as well as dry deposition from radioactive air concentration during a nuclear emergency. The previous dynamic food chain model, in which initial input parameter is only radionuclide concentrations on the ground, was improved for the evaluating of radioactive contamination to agricultural products from either radionuclide concentrations in air or radionuclide concentrations on the ground. As the results, in case of deposition onto the ground, wet deposition was more dominant process than thy deposition. While the contamination levels of agricultural products were dependent on the a variety of factors such as radionuclides and rainfall rate. It means that the contamination levels of agricultural products are determined from which is more dominant process between deposition on the ground and interception onto agricultural plants.

핵종의 지표 침적 모델의 고찰과 함께 방사성물질의 공기중 농도로부터 건침적 뿐 아니라 습침적에 따른 농작물 오염 영향을 분석, 고찰하였다. 이를 위해 방사성물질의 지표 침적량으로부터 농작물의 오염을 평가하는 기존 동적 섭식경로모델을 공기중 농도 또는 지표 침적량으로부터 평가할 수 있도록 개선하였다. 평가결과, 방사성물질의 지표 침적량은 습침적에 의한 영향이 건침적에 의한 영향보다 뚜렷이 높으나, 농작물의 오염정도는 핵종, 강우율 등에 따라 다르게 나타났다. 이러한 현상은 방사성물질의 지표 침적과 농작물에로의 차단중 어느 과정이 농작물 오염에 보다 지배적으로 작용하는가에 기인한다.

Keywords

References

  1. IAEA, 'The International Chernobyl Project: Assessment of Radiological Consequences and Evaluation of Protective Measures', Technical Report (1991)
  2. W. T. Hwang, G. S. Cho and M. H. Han, 'Development of a Dynamic Food Chain Model DYNACON and Its Application to Korean Agricultural Conditions', Journal of Nuclear Science and Technology, 35(6), 454-461 (1998) https://doi.org/10.3327/jnst.35.454
  3. M. H. Han et al., Development of Environmental Radiation Protection Technology : Development of Radiological Emergency Preparedness and Biological Dosimetry Technology, Korea Atomic Energy Research Institute, KAERl/RR-1913/98 (1998)
  4. 황원태, 김은한, 한문희, 최용호, 이한수, 이창우, '원자력 사고 중 강우에 의한 음식물 오염 영향을 고려한 역동학적 섭식경로모델 개선',대한방사선방어학회지, 27(1) (2002)
  5. John E. Till and H. Robert Meyer, Radiological Assessment : A Textbook on Environmental Dose Analysis, NUREG/CR-3332, ORNL-5968, U. S. NRC (1983)
  6. R. O. Chester and C. T. Garten, Jr. 'The Calculation of Wet Deposition from Radioactive Plumes', Nuclear Safety, Vol. 22, No. 3 (1981)