Cesium desorption from biotite under redox oscillations (Fostering Joint International Research)

• Project/Area Number: 16KK0174
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research)
• Allocation Type: Multi-year Fund
• Research Field: Plant nutrition/Soil science
• Research Institution: Kyoto Prefectural University
• Principal Investigator: Nakao Atsushi 京都府立大学, 生命環境科学研究科, 准教授 (80624064)
• Research Collaborator: Chorover Jon アリゾナ大学, 土水環境研究科, 教授 ; Root Robert アリゾナ大学, 土水環境研究科, 研究教授 ; Thompson Aaron ジョージア大学, 農業環境科学研究科, 教授
• Project Period (FY): 2016 – 2017
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
• Keywords: 嫌気性チャンバー / Cs固定黒雲母 / XRD / フェロジン法 / 放射光分析 / 酸化還元電位 / 黒雲母 / Cs固定 / X線回折分析 / 土壌圏現象 / 土壌学 / 地球化学 / 岩石・鉱物・鉱床学 / 分析科学

Outline of Final Research Achievements

Cesium desorption behavior was investigated for Cs-fixing weathered biotite under oxic or anoxic conditions. Although changes in Fe status from ferrous to ferric and increase in the structural distortion of Cs-fixing biotite were confirmed through weathering under oxic condition, cesium desorption was not occurred. In contrast, cesium desorption from the biotite was progressed under anoxic condition, suggesting that soil-to-plant transfer risk of 137Cs may increase under anoxic conditions as in paddy field.

Research Products

• [Int'l Joint Research] アリゾナ大学(米国) (2017)
  • Year and Date: 2017-04-26
• [Remarks] Researchgate
  • URL: https://www.researchgate.net/profile/Atsushi_Nakao
• [Remarks] Google Scholar Citations
  • URL: https://scholar.google.com/citations?user=SvR5C7kAAAAJ
• [Remarks] 京都府立大学 土壌化学研究室 中尾淳の個人ホームページ
  • URL: http://na4ka5.wixsite.com/kpu-soil-chemistry
• [Remarks] 京都府立大学・土壌化学研究室へようこそ！
  • URL: http://www2.kpu.ac.jp/life_environ/bioanal_chem/index.html