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Adsorption of ytterbium onto ${it Saccharomyces cerevisiae}$ fungal cells; A pH-dependent contribution of phosphoryl functional group

酵母細胞へのイッテルビウムの吸着; リン酸官能基への吸着のpH依存

Jiang, M. Y.*; 大貫 敏彦; 山崎 信哉; 田中 万也*; 宇都宮 聡*

Jiang, M. Y.*; Onuki, Toshihiko; Yamasaki, Shinya; Tanaka, Kazuya*; Utsunomiya, Satoshi*

イッテルビウムの酵母への吸着についてXAFSによる化学種同定により検討した。その結果、リン酸官能基に配位したYbの割合はpH3-5でほぼ一定であった。この結果は、解離していないリン酸基への配位を示唆している。

The adsorption of Ytterbium on the cells of yeast ${it Saccharomyces cerevisiae}$ has been studied by batch type experiment by changing solution pH. The Yb adsorption species on the yeast cell wall of the ${it Saccharomyces cerevisiae}$ was determined by extended X-ray absorption fine structure (EXAFS) spectroscopy combined with a linear combination analysis at various pHs. The results indicated that the contribution of Yb-phosphoryl species was constant between pH 3 and 5, strongly suggesting that most of the Yb was associated with undeprotonated phosphoryl functional groups.

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パーセンタイル:68.05

分野:Chemistry, Analytical

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