Use of flow injection in the study of micellar interactions

✍ Scribed by M. de la Guardia; E. Peris-Cardells

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 505 KB
• Volume: 256
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(92)85347-9

✦ Synopsis

The prmclples of flow qectlon and chlutlon, m a rmxmg chamber, were apphed m the development of a rapid method for the study of the mteractlon between nncelles and fluorescent molecules A single channel manifold, with a well stirred mwng chamber, was used m different studies on the Interaction of fluorescent probes wrth surfactants The appropnate dilution of concentrate surfactant solutions, m the presence of a fluorescent probe, with a carrier containing the same probe provided mformation about the effect of the surfactant concentration in the fluonmetnc determmatlon of 2-(4-ammo-2-hydroxyphenyl)benzothlazole (PAS-S) The dilution of a concentrate solution of a fluorescent molecule m a flow stream contammg a surfactant allowed the corresponding fluonmetnc calibration graph to be estabbshed m few mmutes, and from that the mlcellar enhancement of fluorescence (MEF), m different media, could be easdy determmed These procedures were applied to the interaction between micelles of anionic, catIonic and non-loruc surfactants and PAS-S The results obtained were compared with those found m batch analysis