ノントロナイト構造中Feの酸化状態のEh-pH条件依存性

森井 志織; 蓬田 匠; 中田 正美; 岡 壽崇; 北辻 章浩; 高橋 嘉夫

doi:10.14862/geochemproc.71.0_18

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.71.0_18

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Name : Abstracts of Annual Meeting of the Geochemical Society of Japan

Number : 71

Date : September 18, 2024 - September 20, 2024

Dependence of the redox state of structural Fe in nontronite on Eh and pH condition

*Morii Shiori, Yomogida Takumi, Nakada Masami, Oka Toshitaka, Kitatsuji Yoshihiro, Takahashi Yoshio

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Keywords: clay mineral, Fe, redox state, electrochemistry

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 18-

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Abstract

The purpose of this research is to understand the redox reaction between structural Fe in clay minerals and concomitant elements in environments. Then, we are investigating redox properties of Fe in clay minerals over a large range of redox potentials (Eh) and pH. Redox state of the Fe-bearing clay mineral sample (nontronite) was controlled by potential electrolysis at various Eh-pH conditions. From this experiment, we obtained information about the dependence of the redox state of structural Fe in clay minerals on Eh and pH conditions.

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