초록

핵종 누출 사고시 논으로의 핵종 이동 평가를 위한 동적격실모델을 개발하였다. 개발된 모델에는 벼 재배에 필수적인 관개수를 고려하여 표면수 격실과 줄기기부흡수 개념을 도입하였고, 이식 전 쟁기질과 관개담수에 의한 토양 혼합을 고려하였으며, 벼 성장에 따른 뿌리흡수상수, 줄기기부흡수상수의 변화를 생체량의 함수로 모델링하였다. 모델의 타당성 조사를 위해 고리, 영광 및 울진 원자력 발전소 주변 지역에서 채취한 논 토양으로 벼를 재배하면서 벼 생육단계별로 수행된 $^{137}Cs$ 모의 침적 실험 해석에 모델을 적용하였다. 모델은 대체적으로 한 승수 내에서 실험 결과와 잘 일치하였다.

Abstract

A dynamic compartment model was developed to evaluate the transport of accidently released radionuclides onto rice-fields. In the model, the surface water compartment and shoot-base absorption were introduced to account for the effect of irrigation, which is essential to a rice cultivation. The soil mixing by plough and irrigation before transplanting rice was also considered, and the rate of root-uptake and shoot-base absorption were modeled in terms of the function of biomass. In order to test the validation of the model, it was applied to the analysis of some simulated $^{137}Cs$ deposition experiments that were performed while cultivating rice in a greenhouse using soils sampled from rice-fields around Kori, Yonggwang and Ulchin nuclear power plants. The model prediction was generally agreed within about one order of magnitude with experimental data.

주제어

#사고유출   #논   #관개수   #표면수격실   #뿌리흡수   #줄기기부흡수  

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참고문헌 (18)

1. Abbott, M.L. and A.S. Rood, 'CORMIDA: A radionuclide food chain model for acute fallout deposition,' Health Physics, 66,17-29(1994) 
2. Hwang. W.T., G. Cho and M.H. Han, 'Development of a dynamic food chain model DYNACON and its application to Korean agricultural conditions,' J. of Nuclear Science and Technology, 35(6), 451-461 (1998) 
3. Myttenaere, C., P. Bourdeau and M. Masset, 'Relative importance of soil and water in the direct contamination of flooded rice with radiocesium,' Health Physics, 16, 701-707(I969) 
4. D'Souza, T.J., and K.B. Mistry, 'Ansorption of gamma-emitting fission products and activation products by rice under flooded and unflooded conditions from two tropical soils,' Plant and Soil, 55, 189-198(1980) 
5. Choi, Y.H., K.M. Lim, W.Y. Lee, S. Diabate and S. Strack, TWFT and OBT in the rice plant acutely exposed to atmospheric HTO vapor under semi-outdoor conditions, J. Environmental Radioactivity, 58, 67-85(2002) 
6. Chamerlain, A.C., 'Interception and retention of radioactive aerosols by vegetation,' Atmo. Env. 4, 57-78(1070) 
7. 이한수, 사고시 육상생태계 방사능 영향평가 기술개발, KAERI/RR-2346/2002(2003) 
8. Miller, C.W. and F.O. Hoffman, 'An estimation of the environmental half-time for radionuclides deposited on vegetation,' Health Physics, 731-744(1983) 
9. Lee, J.H.,Y.H. Choi, W.T. Hwang, M.H. Han, W.Y. Lee, H.K. Park, and C.W. Lee, C.W. Development of computer code for evaluating internal radiation dose through ingestion and inhalation pathways, KAERI/RR-998/90, Korea Atomic Energy Research Institute(1991) 
10. Anspaugh, L.R., J.H. Shinn, P.L. Phelps, and N.C. Kennedy, Resuspension and redistribution of plutonium in soils, Health Physics, 29, 571-582(1975) 
11. 이은웅, 4정 수도작, 향문사, 서울, 1996. 
12. Muller, H. and G. Prohl, 'ECOSYS-87: A dynamic model for assessing radiological consequences of nuclear accident,' Health Physics, 64, 232-252(1993) 
13. 유동한, 최희주, 이한수, 섭식경로를 통한 방사성핵종의 거동분석을 위한 수학적 모델 개발에 대한 연구, KAERI/TR-2291, (2002) 
14. 최용호, 방사선 환경 방호기술 개발:육상 생태계 사고영향 평가기술개발, 1단계 최종보고서, KAERI/RR2035/99(2000) 
15. Whicker, F.W. and T.B. Kirchner, 'PATHWAY: A dynamic food-chain model to predict radionuclide ingestion after fallout deposition,' Health Physics, 52,717-737(I987) 
16. 금동권, 이한수, 최희주, 이창우, EOCREA-RICE (version 1), 2003-01-12-5222, 프로그램 조정심의위원회(2003) 
17. 최용호, 임광묵, 박효국, 최희주, 이한수, 고리 및 영광 논토양에 대한 137Cs 의 모의사고 침적시 토양 벼-전이계수, 대한방사선방어학회지, 27,201-205(2002) 
18. Keum, D.K, H.S. Lee, H.J. Choi, H.S. Kang, K.M. Lim, Y.H Choi and C.W.Lee, A dynamic compartment model for assessing the transport of radionuclide deposited onto flooded rice-fields,' J. Environmental Radioactivity, in press(2004) 

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