Non-extraction flow injection determination of cationic surfactants using eriochrome black-T

Authors: Ali A Ensafi, B Hemmateenejad, S Barzegar

Publication date: 2009/9/1

Journal name: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Volume: 73

Pages: 794-798

Publisher: Elsevier

A new, rapid, sensitive, non-extraction batch, and flow injection spectrophotometric method
for the determination of cationic surfactants (CSs) such as cetyltrimethyl ammonium bromide
(CTAB), tetra-n-butyl ammonium chloride (TBAC) and cetylpyridinium chloride (CPC) is
proposed. The method is based on the interaction of cationic surfactants with eriochrome
black-T to form an ion-association complex. This complex has strong absorbance at 708nm.
The effects of chemical parameters and FIA variables on the determination of cationic ...