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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
요오드 증기(I2)의 무 작물체에 대한 침적속도 및 뿌리 전류계수 : 피폭실험 결과
Deposition Velocity of Iodine Vapor (I2) for Radish Plants and Its Root- Translocation Factor : Results of Experimental Exposures
Abstract
In order to measure the deposition velocity of I2 vapor for radish plants and its translocation factor for their roots, radish plants were exposed to I2 vapor for 80 min. at different growth stages between 29 and 53 d after sowing. The exposure was performed in a transparent chamber during the morning time. Deposition velocities (ms-1) were on the whole in the range of 1.0 10-4 2.0 10-4 showing an increasing tendency with an increase in the biomass density. The results showed some agreement with existing reports that a higher relative humidity would lead to a higher deposition velocity. The acquired deposition velocities were lower than by factors of several tens than some field measurements probably due to a very low wind speed (about 0.2 ms-1) in the chamber. Translocation factors (ratio of the total iodine in the roots at harvest to the total plant deposition), estimated in a more or less conservative way, were 1.3 10-3 for an exposure at 29 d after sowing and 5.0 10-3 for an exposure at 53 d after sowing. In using the present experimental data, meteorological conditions and chemical and physical forms of iodine need to be carefully considered.
I2 증기, 피폭, 무, 침적속도, 전류계수, 뿌리, I2 vapor, Exposure, Radish, Deposition velocity, Translocation factor, Root
Reference
JNFCWT
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Korean Radioactive
Waste Society (KRS)
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