Related Experiment Video
Updated: Aug 22, 2026

Extraction and Characterization of Surfactants from Atmospheric Aerosols
Published on: April 21, 2017
Tetraiodophenolsulfonphthalein as a spectral substitute to characterize the complexation between cationic and anionic
Hong-Wen Gao1, Yan Qian, Zhang-Jun Hu
1Key Laboratory of Changjiang River Water Environment of Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China. hwgao@mail.tongji.edu.cn
Abstract:
The complexation of cetyltrimethylammonium bromide (CTAB) with sodium dodecyl sulfate (SDS) with sodium dodecyl benzene sulfonate (SDBS), with tetraiodophenolsulfonphthalein (TIPST) as a spectral substitute was investigated at pH 5.89 and 8.30 by the microsurface adsorption--spectral correction (MSASC) technique. The aggregations of TIPST, SDS, and SDBS on CTAB obeyed the Langmuir isothermal adsorption. The aggregates TIPST-CTAB, TIPST2-CTAB3, SDS3-CTAB2, and SDBS3-CTAB2 were formed at 20 degrees C and the binding constants of all the aggregates were determined. The replacement of TIPST-binding CTAB monomer with SDS or SDBS at pH 5.89 was applied to the quantitative determination of anionic detergent (AD) in water with satisfactory recovery.
Related Concept Videos
Surface Active Agents
Micelles
Complexometric Titration: Overview
Complexometric Titration: Ligands
Factors Affecting Solubility
EDTA: Chemistry and Properties

