caa a22 4500 378847260 CHVBK 20180305123314.0 cr unu---uuuuu 161128e20030601xx s 000 0 eng 10.1524/ract.91.6.309.20026 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.6.309.20026 The influence of ozone on ligand-assisted extraction of 239Pu and 241Am from Rocky Flats soil [Elektronische Daten] [J. W. Plaue, K.R. Czerwinski] Chemical extraction of 239Pu and 241Am from a Rocky Flats soil matrix was studied at 50°C using four ligands; citric acid and ascorbic acid at pH 2, EDTA and carbonate at pH 10. The soil was treated for a -12hour reaction period with ozone gas prior to the addition of ligands. With the carbonate ligand, the ozone treatment continued during the entire extraction. High Pu removal was found at pH 2 with ascorbic acid and pH 10 with carbonate. Both maintained redox conditions during the extraction. For the carbonate system, a trend of increased extraction with increasing Eh and carbonate concentration was observed. Ozone treatment of soil prior to addition of EDTA at pH 10 and citric acid at pH 2 was shown to dramatically increase extraction of Am. Since no oxidation of Am occurred, the increased removal from ozone is mainly due to the oxidation of the soil phase containing the Am. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Plaue J. W. aut Czerwinski K.R. aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/6/2003(2003-06-01), 309-314 0033-8230 91:6/2003<309 2003 91 ract https://doi.org/10.1524/ract.91.6.309.20026 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.6.309.20026 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Plaue J. W. aut NATIONALLICENCE 700 1- Czerwinski K.R. aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/6/2003(2003-06-01), 309-314 0033-8230 91:6/2003<309 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter