title: Determination of ethanol using permanganate-CdS quantum dot chemiluminescence system.
abstract: A novel and highly sensitive chemiluminescence (CL) method for the determination of ethanol was developed based on the CdS quantum dots (QDs)-permanganate system. It was found that KMnO4 could directly oxidize CdS QDs in acidic media resulting in relatively high CL emission. A possible mechanism was proposed for this reaction based on UV/Vis absorption, fluorescence and the generated CL emission spectra. However, it was observed that ethanol had a remarkable inhibition effect on this system. This effect was exploited in the determination of ethanol within the concentration range 12-300 µg/L, with detection at 4.3 µg/L. In order to evaluate the capability of presented method, it was satisfactorily utilized in the determination of alcohol in real samples.
authors.affiliation: Department of Chemistry, College of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
authors.forename: Jafar
authors.initials: J
authors.lastname: Abolhasani
authors.affiliation: Department of Chemistry, College of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
authors.forename: Javad
authors.initials: J
authors.lastname: Hassanzadeh
mesh_terms: D001515:Beer / Q000032:analysis; D019187:Cadmium Compounds / Q000737:chemistry*; D002138:Calibration; D000431:Ethanol / Q000032:analysis*; D005504:Food Analysis / Q000379:methods; D049408:Luminescent Agents / Q000737:chemistry; D008163:Luminescent Measurements / Q000379:methods*; D017895:Manganese Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D045663:Quantum Dots / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000737:chemistry*; D013864:Thioglycolates / Q000737:chemistry; D014920:Wine / Q000032:analysis
chemical_list: D019187:Cadmium Compounds; D049408:Luminescent Agents; D017895:Manganese Compounds; D010087:Oxides; D013440:Sulfides; D013864:Thioglycolates; C034939:cadmium sulfide; C048856:permanganic acid; D000431:Ethanol; C017487:2-mercaptoacetate
keywords: chemiluminescence; ethanol; potassium permanganate; quantum dots