| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Outline of Final Research Achievements |
The relation between environmental radioactivity concentration and microbial mat activity in the water samples of Higashi-Hiroshima Campus, Hiroshima University was investigated. EDX revealed that microbial mat contains iron, aluminum, silicon and phosphorus. Model experiment revealed that the potassium was adsorbed by living microorganism in the microbial mats, while it was not adsorbed by dead microbial mat. Iron was adsorbed by both living and dead microbial mats. The present results explained the increase in the total beta-radioactivity of water sample in summer and the decrease in winter.
Contaminated rice was observed in the rice from the paddy field in Fukushima City. We investigated four paddy fields (A, B, C and D) in Fukushima city. The fields are close to mountains. The radioactivity of rice in the husk from B was higher than those from A, C and D. The transfer rate of radioactive cesium from soil to rice was compared with the rate of potassium.
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