caa a22 4500 378927426 CHVBK 20180305123621.0 cr unu---uuuuu 161128e20041101xx s 000 0 eng 10.1524/ract.92.9.697.54978 doi (NATIONALLICENCE)gruyter-10.1524/ract.92.9.697.54978 Am(III) and Eu(III) uptake on hematite in the presence of humic acid [Elektronische Daten] [Tomofumi Sakuragi, Seichi Sato, Tamotsu Kozaki, Toshiaki Mitsugashira, Mitsuo Hara, Yoshimitsu Suzuki] The uptake of Am(III) and Eu(III) on hematite (1.0g/L) in the presence of humic acid (HA; 4.7×10-5M) was investigated at ionic strengths of 0.05 to 0.5M (NaClO4) in the pH range of 4 to 10. The sorption behavior of Am(III) was similar to that of Eu(III). The Am(III) and Eu(III) exhibited 100% retention on the solid in the entire pH region studied at high ionic strength (0.5M). As the ionic strength was decreased below 0.1M, Am(III) and Eu(III) sorption which was complete at low pH values decreased stepwise with increasing pH from 5 to 7. In order to test the additivity and to understand the solid-water interface reactions for Am(III) sorption in ternary systems, binary interactions between Am(III), HA, and hematite were also examined under identical conditions. The additive results reproduced the stepwise decreases of sorption up to a pH of about 6 for lower ionic strengths, which can be ascribed to HA adsorption behavior. However, inconsistencies in additivity from experimental results were found in the pH regions above 7 at low ionic strengths and in the entire pH region at an ionic strength of 0.5M. Some non-additive effects are discussed in this paper. © 2004 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Sakuragi Tomofumi aut Sato Seichi aut Kozaki Tamotsu aut Mitsugashira Toshiaki aut Hara Mitsuo aut Suzuki Yoshimitsu aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/9-11/2004(2004-11-01), 697-702 0033-8230 92:9-11/2004<697 2004 92 ract https://doi.org/10.1524/ract.92.9.697.54978 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.92.9.697.54978 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sakuragi Tomofumi aut NATIONALLICENCE 700 1- Sato Seichi aut NATIONALLICENCE 700 1- Kozaki Tamotsu aut NATIONALLICENCE 700 1- Mitsugashira Toshiaki aut NATIONALLICENCE 700 1- Hara Mitsuo aut NATIONALLICENCE 700 1- Suzuki Yoshimitsu aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/9-11/2004(2004-11-01), 697-702 0033-8230 92:9-11/2004<697 2004 92 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter