セレン酸・亜セレン酸のバライトへの共沈の構造的要因

徳永 紘平; 高橋 嘉夫

doi:10.14824/jakoka.2015.0_65

Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences

2015 Annual Meeting of Japan Association of Mineralogical Sciences

Session ID : R2-03

DOI https://doi.org/10.14824/jakoka.2015.0_65

Conference information

Host: Japan Association of Mineralogical Sciences

R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

Factors controlling barite-water distribution of selenium oxyanions in terms of structural affinity

*Kohei Tokunaga, Yoshio Takahashi

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Keywords: barite, selenate, selenite, structural affinity, XAFS

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

It was found that a larger amount of Se(VI) than Se(IV) was incorporated from adsorption site on the surface into the barite crystal by substituting sulfate site because of their high crystallinity that can excludes Se(IV) to a larger degree than Se(VI) due to the similar structure of sulfate ion and sulfate.

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