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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 24, Number 10
BKCSDE 24(10)
October 20, 2003

Title	Interaction of Indigo Carmine with Cetyltrimethylammonium Bromide and Application to Determination of Cationic Surfactant in Wastewater
Author	Hong-Yan Wang, Hong-Wen Gao, Jian-Fu Zhao
Keywords	MSASC technique, Langmuir aggregation, Indigo carmine, Cetyltrimethylammonium bromide, Determination of cationic surfactant
Abstract	The microsurface adsorption - spectral correction (MSASC) technique has been applied to the interaction of indigo carmine (IC) with cetyltrimethylammonium bromide (CTAB). The aggregation of IC on CTAB obeys Langmuir isothermal adsorption. The results show that both the monomer complex IC·CTAB and the micellar complex (IC·CTAB)78 were formed. The binding constant of the monomer complex was calculated to be KIC·CTAB = 2.20 × 105 L·mol.1, and the molar absorptivity of the micellar complex was calculated to be ε(IC·CTAB)78 560 nm = 8.58 × 105 L·mol.1·cm.1. The aggregation was applied to the determination of cationic surfactant in wastewater.
Page	1444 - 0
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