Pérez-Ruiz, T Flow injection fluorimetric determination of ascorbic acid based on its photooxidation by thionine blue. [electronic resource] - The Analyst Feb 1997 - 115-8 p. digital Publication Type: Journal Article ISSN: 0003-2654 Standard No.: 10.1039/a606841c doi Subjects--Topical Terms: Ascorbic Acid--analysisFlow Injection AnalysisLightOxidation-ReductionPhenothiazines--chemistry