Dipolar anions are not preferentially attracted to the oil/water interface (letter)

Title: Dipolar anions are not preferentially attracted to the oil/water interface (letter)
Creator: Beattie, James K.; Djerdjev, Alex M.; Warr, Gregory G.
Relation: Journal of Physical Chemistry B Vol. 109, no. 33, p. 15675-15676
Publisher: American Chemical Society
Resource Type: journal article
Date: 2005
Description: Homogenization of hexadecane in water at pH 9 gives the same surface charge density in the presence of 0.2 mM thiocyanate or acetate anions as in the presence of chloride, indicating that these dipolar anions are not preferentially adsorbed at the oil/water interface. The decrease in the zeta potential of the emulsion droplets as the sodium salts of iodate, thiocyanate, or acetate are added from 0.1 to 10 mM is the same as that when sodium chloride is added, leading to the same conclusion. Increasing the sodium hydroxide concentration from pH 9 to 11.5 has a different effect on the zeta potential, consistent with the specific adsorption of hydroxide ion at the oil/water interface.
Subject: dipolar anions; oil/water interface
Identifier: http://hdl.handle.net/1959.13/24518
Identifier: uon:2
Identifier: ISSN:1520-6106
Language: eng

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