Magnetophoretic Measurements of Interfacial Magnetic Susceptibility of Micro-Organic Droplet

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  • 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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  • 磁気泳動法による液滴界面への常磁性金属イオンの吸着平衡の測定
  • ジキ エイドウホウ ニ ヨル エキテキ カイメン エ ノ ジョウジセイ キンゾク イオン ノ キュウチャク ヘイコウ ノ ソクテイ

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Abstract

It has been highly required to analyze the environmental or biological micro–particles noninvasively and nondestructively, since these particles have each characteristic function in the surface and inside the individual particle. Magnetophoresis is a relatively new migration method of particles, which allows us not only to separate particles having different magnetic susceptibility but also to determine the paramagnetic ions in individual particles. In micron–sized particles, the molecule at the surface changes the magnetic susceptibility of particles, because the specific area increases with inversely proportional to the radius of the particle. In this review, we describe the magnetophoretic detection of interfacial adsorption of paramagnetic Dy (III) ion at the 2–fluorotoluene droplet in aqueous solution.

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