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

✍ Scribed by Hitoshi Hoshino; Tohru Saitoh; Hirofumi Taketomi; Takao Yotsuyanagi; Hiroto Watanabe; Kohei Tachikawa

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 469 KB
• Volume: 147
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(83)80101-9

✦ Synopsis

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-4nonylphenyl ether and for Triton X-100, respectively, to determine the partition constants for 8quinolino1, 2-( 2-thiazolylazo)4-methylphenol, 4-nitrophenol and 2,4-dinitrophenol. The constants for 8quinolinol in the two surfactant systems agreed to within an order of magnitude. The mechanism of the solubilization processes is discussed.