南相馬で ついにプルトニウム２３８を検出！
http://fukushima-diary.com/2012/04/plutonium-238-measured-in-minamisoma/ より
Plutonium 238 measured in Minamisoma
Following up this article..0.27 μSv/h alpha ray on the roof of Minamisoma city hall
0.038 Bq/Kg (2.47Bq/m2) of Plutonium 238 was measured in Minamisoma.
They also measured 0.047 Bq/Kg ofPlutonium 239 and 240, and 0.73 Bq/Kg of Plutonium 241.
8.5 Bq/Kg of Strontium 89, and 50 Bq/Kg of Strontium 90 was also measured.
Mr. Oyama, Minamisoma city councilor had city government measure it. He comments like these below,
- Sample was taken after decontamination.
- The sample contains soil, sand, and water other than black substance.(Water ratio is not announced.)
- Sample to consist of only black substance and water (Moisture content = 71.4%) contains 309,000 Bq/Kg of cesium and it’s 1,080,000 Bq/Kg when it’s dry. It therefore will be more than 3 times higher if it doesn’t content sand, soil or water.
- Pu238/Pu239+240 used to be 0.027 before 311. This result shows it’s 0.808.
- The analysis was done by Japan Chemical Analysis Center, which is outsourced by the government.
http://onuma.cocolog-nifty.com/blog1/2012/04/fukushima-di-47.html#more より
〔Fukushima Diary〕★★★ 大山市議情報、ＦＤの英訳報道で 全世界に拡散中 ／南相馬で ついにプルトニウム２３８を検出！
・サンプルは除染後に採取されたものだった。
・そのサンプルも、問題の「黒い物質」よりも土砂・水分を含むものだった（水分の含有率も市の発表資料には書かれていない）
・土砂・水分を除けば、３倍以上の測定値になるはず。
・３・１１以前のプルトニウム２３８／プルトニウム２３９＋２４０の測定比は０．０２７だったが、今回の検査結果では０．８０８に達している。
•Sample was taken after decontamination.
•The sample contains soil, sand, and water other than black substance.(Water ratio is not announced.)
•Sample to consist of only black substance and water (Moisture content = 71.4%) contains 309,000 Bq/Kg of cesium and it’s 1,080,000 Bq/Kg when it’s dry. It therefore will be more than 3 times higher if it doesn’t content sand, soil or water.
•Pu238/Pu239+240 used to be 0.027 before 311. This result shows it’s 0.808.
