Method for regeneration osmium (Ⅷ) oxide from a spent solution of osmium oxide used for sample preparation for electron microscopy

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  • Suzuki Kazushige
    Center for Medical Waste Management, Hamamatsu University School of Medicine
  • Muranaka Yoshinori
    Ultrastructural Morphology Laboratory, Research Equipment Center, Hamamatsu University School of Medicine
  • Miyazawa Yuichi
    Center for Medical Waste Management, Hamamatsu University School of Medicine
  • Kamiya Ayumi
    Center for Medical Waste Management, Hamamatsu University School of Medicine
  • Fujimoto Chuzo
    Center for Medical Waste Management, Hamamatsu University School of Medicine Department of Chemistry, Hamamatsu University School of Medicine
  • Ohta Isao
    Ultrastructural Morphology Laboratory, Research Equipment Center, Hamamatsu University School of Medicine
  • Itoh Kiyotaka
    Hamanetsu Co., Ltd.
  • Sakata Kuniaki
    Hamanetsu Co., Ltd.

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Other Title
  • 酸化オスミウム（Ⅷ）を含む電子顕微鏡試料作製廃液の再生に関する研究
  • サンカ オスミウム(Ⅷ)オ フクム デンシ ケンビキョウ シリョウ サクセイ ハイエキ ノ サイセイ ニ カンスル ケンキュウ

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Description

An osmium (Ⅷ) oxide solution that had been used for sample preparation for electron microscopy was processed by ozonation and then treated with a 0.1 mol/L solution of sodium hydroxide. An apparatus was assembled such that a systemic series of mechanical and chemical operations was performed to regenerate osmium (Ⅷ) oxide. By optimizing the operating parameters of the apparatus, a solution with osmium (Ⅷ) oxide content of 2.0%(w/v) or higher was produced. The generated osmium (Ⅷ) oxide was found to be reusable for sample preparation for electron microscopy.

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