Article

Journal of Radioanalytical and Nuclear Chemistry

, Volume 295, Issue 3, pp 2283-2287

Adsorption of ytterbium onto Saccharomyces cerevisiae fungal cells: A pH-dependent contribution of phosphoryl functional group

  • MingYu JiangAffiliated withDepartment of Chemistry, Kyushu UniversityAdvanced Science Research Center, Japan Atomic Energy AgencyKey Laboratory of Marine Geology and Environment, CAS Institute of Oceanology, Chinese Academy of Science
  • , Toshihiko OhnukiAffiliated withAdvanced Science Research Center, Japan Atomic Energy Agency Email author 
  • , Shinya YamasakiAffiliated withAdvanced Science Research Center, Japan Atomic Energy Agency
  • , Kazuya TanakaAffiliated withAdvanced Science Research Center, Japan Atomic Energy AgencyInstitute for Sustainable Sciences and Development, Hiroshima University
  • , Satoshi UtsunomiyaAffiliated withDepartment of Chemistry, Kyushu University

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Abstract

The adsorption of ytterbium on the cells of yeast Saccharomyces cerevisiae has been studied by batch type experiment by changing solution pH. The Yb adsorption species on the yeast cell wall of the S. cerevisiae was determined by extended X-ray absorption fine structure 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.

Keywords

Ytterbium Adsorption Microorganism Chemical species EXAFS