Chemiluminescence from an Oxidation Reaction of Rhodamine B with Cerium(IV) in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane/Water

Surfactant Gel Extraction of Metal Ammine Complexes using SDS and KCl at Room Temperature, and a Small-angle X-ray Diffraction Study of the Surfactant Phase

“…Despite their advantages, extraction methods have a number of shortcomings, the greatest of which is the need for organic solvents, which tend to be flammable and/or toxic substances. The problem of making extraction safer can be solved by finding less toxic extracting agents and interest has been shown in the separation of metal ions via extraction methods using ionic liquids [2] and surfactants [3,4] as the extraction medium.…”

“…The solution was heated and evaporated to dryness. The residue was dissolved in 3 cm 3 of concentrated nitric acid and diluted with water to 200 cm 3 . The composition of Scheme1.…”

A Flow Method for Chemiluminescence Determination of Antimony(III) and Antimony(V) Using a Rhodamine B-Cetyltrimethylammonium Chloride Reversed Micelle System Following On-Line Extraction

“…25 Sb(V) was transferred as the [SbCl6] -ion from aqueous solutions into toluene in the extraction process involving ion-pair formation of the chloro-complex anion with the RBH + ion. When the Ce(IV) oxidant in the acidic water pools of the reversed micelles of cetyltrimethylammonium chloride (CTAC) in 1-hexanolcyclohexane was mixed with the RB solution in toluene using an FI system, CL emission resulted from the oxidation of RB with Ce(IV) following its uptake by the micelles into the water pools 25,26 and the CL intensity was stronger than that in the usual aqueous solution. 26,27 As RB is extracted one-on-one with the Sb(V) chloro-anion, the CL intensity is proportional to the amount of RB extracted.…”

“…When the Ce(IV) oxidant in the acidic water pools of the reversed micelles of cetyltrimethylammonium chloride (CTAC) in 1-hexanolcyclohexane was mixed with the RB solution in toluene using an FI system, CL emission resulted from the oxidation of RB with Ce(IV) following its uptake by the micelles into the water pools 25,26 and the CL intensity was stronger than that in the usual aqueous solution. 26,27 As RB is extracted one-on-one with the Sb(V) chloro-anion, the CL intensity is proportional to the amount of RB extracted. 25 Since the off-line extraction process is manually operated and is open, the off-line procedure is relatively tedious, slow, and susceptible to contamination from laboratory wares and the environment.…”

Inhibition of Rhodamine B-Ferricyanide Chemiluminescence by Gold Nanoparticles and Sensitive Determination of Hazardous Cyanide

“…Rhodamine B (RohB) is widely used as CL luminophor accompanied by various oxidants. 1,2 Recently, noble metal nanoparticles (NPs), especially Ag and AuNPs, have been adopted in CL systems for use in various areas of analytical chemistry due to their unique physical and chemical properties. [3][4][5] Ag and AuNPs can act mainly as catalysts in CL reactions.…”