Interaction of Indigo Carmine with Cetyltrimethylammonium Bromide and Application to Determination of Cationic Surfactant in Wastewater

Bulletin of the Korean chemical society

Hong-Yan Wang¹  Hong-Wen Gao¹  Jian-Fu Zhao¹ 

关键词: MSASC technique;    Langmuir aggregation;    Indigo carmine;    Cetyltrimethylammonium bromide;    Determination of cationic surfactant;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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 �?(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.

【 授权许可】

Unknown