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Report No.

In-situ analyses of chemical state and ionic distribution in the extraction chromatography column

Watanabe, So  ; Sano, Yuichi   ; Myochin, Munetaka; Okamoto, Yoshihiro  ; Shiwaku, Hideaki   ; Ikeda, Atsushi  ; Suzuki, Shinichi; Yaita, Tsuyoshi

Y-K edge X-ray absorption measurements on the extraction chromatography column revealed that distribution of Y ion and local structure around Y ion inside the column can be evaluated simultaneously. The ionic distribution and the local structure were derived from the X-ray absorption intensity and EXAFS analysis, respectively. Density profile of Y ion inside the packed column moved to downstream of the column and local structural parameters of the nearest O around Y changed by supplying eluent. The X-ray absorption spectroscopy of more than one element in the column is expected to reveal the separation mechanism of the extraction chromatography.



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