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.
(Previously announced)
As a result of plutonium analysis in the soil from the samples at the 3
periodic sampling spots collected on June 27, plutonium 238, 239, and 240
were detected as shown in the attachment 1.
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 2.
And, as a result of uranium analysis in the soil from the samples at the 3
periodic sampling spots collected on June 13, uranium 234, 235 and 238
were detected as shown in the attachment 3.
In addition, since plutonium and uranium were detected as a result of the
analysis in the soil from the samples at the 2 out of 3 periodic sampling
spots collected on May 30, americium and curium analysis in the soil was
conducted. As a result of the analysis, americium 241 and curium 242, 243
and 244 were detected as shown in the attachment 4.
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.
Attachment1: Fukushima Daiichi Nuclear Power Station: Plutnium analysis
result in the soil (PDF 9.27KB)
Attachment2: Result of gamma ray nuclide analysis of soil -
Fukushima Daiichi Nuclear Power Station (PDF 8.57KB)
Attachment3: Fukushima Daiichi Nuclear Power Station: Uranium analysis
result in the soil(PDF 10.8KB)
Attachment4: Fukushima Daiichi Nuclear Power Station: Am and Cm analysis
result in the soil(PDF 11.9KB)