A general chemiluminescence method for the determination of surfactants based on its quenching effect on the luminol-NaIO4-cyclodextrin reaction

Abstract

Here we report that all types of surfactant could be simply and sensitively determined, by directly quenching the chemiluminescence (CL) between luminol and NaIO4 in a basic solution containing one polyhydroxyl compound such as cyclodextrin (CD), glucose or glycerol. This specific quenching effect was attributed to the change of the microenvironment of the CL reaction, caused by the addition of various surfactants. Based on this fact, the potential use of this CL reaction was exemplified by the cationic surfactant CTMAB, anionic surfactant SDS and non-ionic surfactant Triton X-100. It was found that the measurable range of CTMAB, SDS and Triton X-100 were 4.0 x 10(-6)-4.0 x 10(-4) M by using a basic CD-luminol-NaIO4 CL reaction. With our simple setup, CTMAB, SDS and Triton X-100 were detectable at a concentration as low as 2 microM. Overall, this new CL reaction is quite promising for the post-column determination of surfactant mixtures.

Electrochemiluminescence from direct electro-oxidations of organic analyte rutin and its analytical application

“…It was found that all the surfactants enhanced the ECL of rutin. This enhancement may be attributed to the increase of electrode surface hydrophobicity [36], which prolonged the lifespan of the electro-generated rutin o-semiquinone radical and facilitated more rutin semiquinone radical to be oxidized [37][38][39]. Experiment also showed that CTAC gave the maximum ECL signal, and the best reproducibility for monitoring rutin.…”

“…It was well-known that the presence of surfactants may increase ECL intensity [36][37][38][39]. To increase the ECL intensity of rutin, some surfactants, including two neutral surfactants (Tween 80 and Tween 20), three cationic surfactants (tetramethyl ammonium chloride, tetrabutyl ammonium chloride and CTAC), and one anionic surfactant (sodium dodecyl sulfate), were examined.…”

Chemiluminescence of phthalhydrazide derivatives in organized media: Interactions with surfactants and cyclodextrins

“…In aqueous solution, the presence of surfactants above the critical micelle concentration (cmc) usually modifies the CL, which has been applied for raising the CL of various chemiluminescent systems [3][4][5][6]. Investigations on the CL in micellar media have revealed that these changes can arise from several mechanisms [7,8]. The most common one is the solubilization of the luminophore in the hydrophobic core of the micelles.…”

Reaction mechanism of surfactant‐sensitized chemiluminescence of bis(2,4,6‐trichlorophyenyl) oxalate and hydrogen peroxide induced by gold nanoparticles

“…They are a class of compounds that are found in a multitude of domains, from industrial settings to research laboratories to household products, as well as environmental pollutants. In the CL system, surfactants were reported to enhance or directly quench the light emission (9).…”