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Citation: XU Jia-Li, LI Yuan-Fang. Interaction of Perchlorate and Cetyltrimethylammonium Bromide Investigated by Light Scattering Technique[J]. Chinese Journal of Applied Chemistry, ;2010, 27(8): 935-938. doi: 10.3724/SP.J.1095.2010.90518 shu

Interaction of Perchlorate and Cetyltrimethylammonium Bromide Investigated by Light Scattering Technique

XU Jia-Li ,
LI Yuan-Fang

Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715

Received Date: 3 August 2009
Revised Date: 31 December 2009

Light scattering(LS) technique was employed to investigate the interaction between perchlorate and cationic surfactant cetyltrimethylammonium bromide(CTAB). It was found that perchlorate could combine with CTAB in an acidic medium to form ionic associated compounds due to the electrostatic attraction,resulting in enhanced LS signals. It should be noted that anions such as Cl^-,Br^-,ClO₃^-,NO₃^- and PO₄^3- can only induce weak LS signals when interacting with CTAB alone,but significant changes of LS signals can be observed once these anions coexist with perchlorate,indicating that coordinating effects exist. In order to dis-cuss the coordination mechanism,dynamic light scattering(DLS) measurements were further made with chlo-rate(Cl^-) as an example.
- perchlorate,
- cetyltrimethylammonium bromide,
- light scattering,
- dynamic light scattering
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