Total Fluorescence and Zero-Crossing First-Derivative Synchronous Fluorescence Determination Of Acetylsalicylic Acid Metabolites in Biological Fluids

Abstract
Simple fluorescence methods involving no sample pre-treatment are investigated concerning the direct determination of salicylate in serum, plasma and synovial fluid (total fluorescence) and of salicylic and salicyluric acids in urine (zero-crossing first-derivative synchronous fluorescence).