title: Rapid flow injection method for the determination of sulfite in wine using the permanganate-luminol luminescence system.
abstract: A simple, rapid and sensitive chemiluminescence method for the determination of sulfite has been developed by combining flow-injection analysis and its sensitizing effect on the known chemiluminescence emission produced by the oxidation of luminol in alkaline medium; in this work permanganate has been proposed as oxidizing reactive. The optimum conditions for the chemiluminescence emission were established. The chemiluminescence was proportional to the sulfite concentration over the range 1.6 × 10(-5) and 4.0 × 10(-4)mol L(-1). The detection limit was 4.7 × 10(-6)mol L(-1) of sulfite. The method has been satisfactorily used for the determination of free and bound sulfite in wines.
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 4012 Seville, Spain.
authors.forename: Mercedes Villar
authors.initials: MV
authors.lastname: Navarrro
authors.forename: María Ramos
authors.initials: MR
authors.lastname: Payán
authors.forename: Miguel Angel Bello
authors.initials: MA
authors.lastname: López
authors.forename: Rut
authors.initials: R
authors.lastname: Fernández-Torres
authors.forename: Manuel Callejón
authors.initials: MC
authors.lastname: Mochón
mesh_terms: D017022:Flow Injection Analysis / Q000379:methods*; D057230:Limit of Detection; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements; D008165:Luminol / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D013447:Sulfites / Q000032:analysis*; D013997:Time Factors; D014920:Wine / Q000032:analysis*
chemical_list: D049408:Luminescent Agents; D017895:Manganese Compounds; D010087:Oxides; D013447:Sulfites; C048856:permanganic acid; D008165:Luminol