Micellar solubilization equilibria for some analytical reagents in aqueous non-ionic surfactant solutions

Hitoshi Hoshino, Tohru Saitoh, Hirofumi Taketomi, Takao Yotsuyanagi, Hiroto Watanabe, Kohei Tachikawa

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

On the basis of an aqueous micelle two-phase partition model, a quantitative description is made of analytical solubilization systems involving aqueous non-ionic surfactant solutions. The micellar phase separation method and the acid dissociation method were employed for polyoxyethylene-4-nonylphenyl ether and for Triton X-100, respectively, to determine the partition constants for 8-quinolinol, 2-(2-thiazolylazo)-4-methylphenol, 4-nitrophenol and 2,4-dinitrophenol. The constants for 8-quinolinol in the two surfactant systems agreed to within an order of magnitude. The mechanism of the solubilization processes is discussed.

Original languageEnglish
Pages (from-to)339-345
Number of pages7
JournalAnalytica Chimica Acta
Volume147
Issue numberC
DOIs
Publication statusPublished - 1983 Jan 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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