| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an extractant which can extract radioactive elements, in particular, Tc and Re, from a high-level radioactive waste liquid, without causing organic waste solvents to be generated, or using a high concentration nitric acid. <P>SOLUTION: A solid extractant for radioactive elements comprises microcapsules including methyliminobis dialkyl acetamide expressed by the formula (I): CH<SB>3</SB>N(CH<SB>2</SB>CONR<SB>2</SB>)<SB>2</SB>(wherein R denotes an alkyl group the carbon umber of which is 8 to 12). <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
