caa a22 4500 378930907 CHVBK 20180305123629.0 cr unu---uuuuu 161128e20040801xx s 000 0 eng 10.1524/ract.92.8.463.39276 doi (NATIONALLICENCE)gruyter-10.1524/ract.92.8.463.39276 Extraction and separation of Am(III) and Sr(II) by N,N,N´,N´-tetraoctyl-3-oxapentanediamide (TODGA) [Elektronische Daten] [H. Suzuki, Y. Sasaki, Y. Sugo, A. Apichaibukol, T. Kimura] By using an extractant, N,N,N´,N´-tetraoctyl-3-oxapentanediamide (TODGA), extraction and separation of Sr(II) from Am(III) were investigated for the partitioning of high level liquid waste (HLLW). Both metal ions, accompanied with the counter anion, NO3-, and HNO3 without dissociation, were extracted by TODGA. We used two distinct methods for the separation of Am(III) and Sr(II). A mixture of TODGA and monoamide reduced the distribution ratio D of Sr(II) compared to that without monoamide, whereas D(Am) was still high value under the identical condition. After extraction of Am(III) by TODGA and monoamide, Sr(II) remaining in HLLW can be extracted by using enough concentration of TODGA at the next step. In the other method, Sr(II) was coextracted with Am(III) by TODGA. It was observed that D(Sr) decreased with an increase of HNO3 from 3M to 6M HNO3 at the same TODGA concentration, while D(Am) increased until 6M HNO3. By using 6M HNO3, Am(III) and Sr(II) were separated after coextraction. © 2004 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Suzuki H. aut Sasaki Y. aut Sugo Y. aut Apichaibukol A. aut Kimura T. aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 463-466 0033-8230 92:8/2004<463 2004 92 ract https://doi.org/10.1524/ract.92.8.463.39276 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.92.8.463.39276 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Suzuki H. aut NATIONALLICENCE 700 1- Sasaki Y. aut NATIONALLICENCE 700 1- Sugo Y. aut NATIONALLICENCE 700 1- Apichaibukol A. aut NATIONALLICENCE 700 1- Kimura T. aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 463-466 0033-8230 92:8/2004<463 2004 92 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter