| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
|
|---|
| Outline of Final Research Achievements |
I intended to record environmental radioactivity in the Miyagi prefecture area, and decided to use the data for environmental radioactivity education after the accident of the Fukushima Nuclear Power Plants. Natural and artificial radionuclides in soils were determined in the Ishinomaki Kobunkan High School, Sendai Ikuei Gakuen School, and Kawauchi-kita campus of Tohoku University. Depth profiles of natural radionuclides in soils showed constant concentration while artificial radionuclides, Cs-134 and Cs-137, were mainly observed in surface soils. This trend was commonly observed for all soil samples collected in this study. Soil particles were sieved out and separated into 4 fractions. It was found that the concentration of radioactive Cs was higher in fine soil particles rather than in large particles. Analysis of depth profiles for 3 years in Kawauchi-kita campus revealed that radioactive Cs has been slowly migrating with a speed of 0.33 cm / y.
|
