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Transfer Mechanism of Dodecyl Sulfate with Methylene Blue across an Oil/Water Interface Studied by Single-Droplet Injection and Microabsorption Methods.

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Abstract

The ion-pair extraction mechanism in a dodecyl sodium sulfate (Na+DS)/Methylene Blue (MB+Cl) system was kinetically investigated by single microdroplet techniques. A single tributyl phosphate microdroplet was injected into an aqueous solution and the extraction rate of MB+ by DS into the single droplet was measured with time using a microabsorption method. The MB+ concentration in the droplet at the extraction equilibrium was independent of the pH in water, while the extraction rate was highly influenced by the pH. The characteristic pH dependence of the MB+/DS extraction was considered in terms of the mass transfer of MB+, DS and H+ as individual ions across the oil/water interface.

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Details

  • CRID
    1390282679097759232
  • NII Article ID
    130004058507
    10010538469
  • NII Book ID
    AA00580132
  • DOI
    10.1246/bcsj.76.295
  • ISSN
    13480634
    00092673
  • NDL BIB ID
    6440606
  • Text Lang
    en
  • Data Source
    • JaLC
    • NDL
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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