As part of monitoring activity of the surrounding environment, we conducted
an analysis of plutonium contained in the soil collected on March 21 and 22
at the 5 spots in Fukushima Daiichi Nuclear Power Station. As a result,
plutonium 238, 239 and 240 were detected.
As a result of plutonium and strontium analysis in the soil from the
samples at the 3 periodic sampling spots collected on August 15, plutonium
238, 239, and 240 and strontium 89 and 90 were detected as shown in the
attachment 1 and 2.
In addition, as a result of nuclide analysis of the gamma ray contained in
the soil, radioactive materials were detected as shown in the attachment 3.
Today, we informed the Nuclear and Industrial Safety Agency and the
government of Fukushima Prefecture of the results.
We will continue conducting the similar analysis.
Appendix1: Fukushima Daiichi Nuclear Power Station: Plutonium analysis
result in the soil (PDF 34.4KB)
Appendix2: Fukushima Daiichi Nuclear Power Station: Strontium analysis
result in the soil (PDF 8.80KB)
Appendix3: Result of gamma ray nuclide analysis of soil
- Fukushima Daiichi Nuclear Power Station (PDF 10.2KB)