導電性を有する板状試料のゼータ電位　（Ｉ）　　測定法の開発

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書誌事項

タイトル別名
  • Zeta Potential of Conductive Plates. (I) Development of a Zeta Potential Determination Method.
  • 導電性を有する板状試料のゼータ電位(1)測定法の開発
  • ドウデンセイ オ ユウスル イタジョウ シリョウ ノ ゼータ デンイ 1 ソクテイホウ ノ カイハツ
  • (I) Development of a Zeta Potential Determination Method
  • (I) 測定法の開発

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説明

ζ-potentials of insulating plates, e.g., quartz and sapphire plates, have been measured by means of the plane interface technique. This technique involves determining the electro-osmotic flow velocity-depth profile of reference (polystyrene latex) particles inside a cell. The electro-osmotic velocity at the lower boundary of the cell, referring to the sample surface-solution interface, permits to calculate the ζ-potential of the sample. However, this method is inapplicable to electrically conductive plates such as metal, because its conductivity results in electrolysis of water and disturbs to establish the electro-osmotic velocity profile. It is proved to be efficient for measuring the ζ-potential of metallic plates by inserting an insulator between the cell and the conductive plate. The size of the spacer is 4 mm inside width and 45 μm thick. The precision and accuracy of this method were proved to be ± 10 mV. This method is applicable to evaluate the adsorption between the aqueous ions and the aluminum alloy plates.

収録刊行物

  • 表面科学

    表面科学 22 (8), 504-509, 2001

    公益社団法人 日本表面科学会

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