四酸化ルテニウムによる潜在指紋の検出

抄録

  The method studied in this paper is developing latent fingerprints based on ruthenium tetroxide (RuO₄) method. Ruthenium tetroxide fuming promptly react with various organic compound, particularly oils or fats contained in sebaceous secretions in latent print and producing brownish black or black ruthenium dioxide (RuO₂).
  Ruthnium Tetroxide is yellow, volatile crystails (melting point; 25.5°C, boiling point; 100.8°C) at room temperature.
  Conventional methods using RuO₄ have been almost impractical because it is very difficult to handle by its strong oxidizability. Additionally because of the two liquid method, it is not only troublesome to produce RuO₄ fumes immediately before developing latent fingerprints, but also is difficult to produce necessary ammounts of RuO₄ fumes.
  In this method, these problems were resolved by utilizing a saturated hydrocarbon halogenid solution of RuO₄