The cheap dustcloth which absorbs cesium efficiently（セシウムを吸い取る安価なぞうきん）

Developed by the Institute of Industrial Science, University of Tokyo, the rag inexpensive efficiently absorb radioactive cesium. Confirmed the effect of pond water and contaminated water flowing from the rain in the village of Doi Iidate Fukushima Prefecture. One problem is what to do with the recovery of used rags, the disposal, the future, that I want to help in reaching out to local governments decontamination. Prof. Sakoda morning of April 28, was announced.

Cesium, using nature to stick well and pigment called Prussian blue (iron blue). And soak the cloth in order to two types of solutions used to create the Prussian blue, Prussian blue will adhere firmly to the cloth, which is fixed. The rain gutters for a bucket of water was collected in the village Iidate, 20 grams overnight and put this cloth, cesium concentration of water becomes less than or equal to 8 from 20 becquerel per kilogram becquerel about. In fact I use it unless it is clear how to how to collect and process sounds like difficulty.



放射性セシウムを効率よく吸い取る安価なぞうきんを、東京大学生産技術研究所が開発した。福島県飯舘村で雨どいから流れる汚染水や池の水で効果を確認した。使用済みぞうきんの回収、処分をどうするかが課題だが、今後、自治体に働きかけて除染に役立てていきたいという。迫田教授らが２８日午前、発表した。
　セシウムが、プルシアンブルー（紺青）と呼ばれる顔料によくくっつく性質を利用した。紺青を作るときに使う２種類の溶液に順に布を浸すと、紺青が布にしっかり付着し、固定された。飯舘村で採取した雨どいの水をバケツにためて、この布２０グラムを一晩つけると、水のセシウム濃度は１キログラムあたり約 ２０ベクレルから８ベクレル以下になった。回収方法と処理方法が明確にならない限り実際に使うのは難しそうですね。