New Principle of Magnetophoretic Velocity Mass Analysis

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  • WATANABE Katsuya
    Department of Chemistry, Graduate School of Science, Osaka University
  • SUWA Masayori
    Department of Chemistry, Graduate School of Science, Osaka University
  • WATARAI Hitoshi
    Department of Chemistry, Graduate School of Science, Osaka University

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抄録

We propose a novel principle of velocity mass analysis of a micro-particle using magnetophoretic force. The new method can determine the mass of a particle from its magnetophoretic velocity change in a high magnetic field gradient in a low viscous medium such as air. In the present study, the new principle was demonstrated by the magnetophoretic acceleration of an aqueous manganese(II) chloride micro-droplet and the deceleration of a water micro-droplet in the atmosphere. The observed velocity change was analyzed taking into account the mass of the droplet through the acceleration term of the equation of motion. The experimental results proved that the inertia force in the magnetophoretic velocity of a micro-particle could be detected in air. The present method provided an innovative mass analysis method without any ionization of the sample.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 20 (11), 1483-1485, 2004

    社団法人 日本分析化学会

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