RT Journal Article SR Electronic T1 Determination of Major Carboxylic Acids in Wine by an Optimized HPLC Method with Linear Gradient Elution JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 289 OP 294 DO 10.5344/ajev.1990.41.4.289 VO 41 IS 4 A1 R. M. Marcé A1 M. Calull A1 F. Borrull A1 F. X. Rius YR 1990 UL http://www.ajevonline.org/content/41/4/289.abstract AB An optimized method to determine carboxylic acids in wine based on pre-column derivatization with phenacyl bromide is reported. The determination of the different acids has been carried out using a linear gradient elution involving water and methanol. The method has been optimized by the Simplex method using a modification of CRF (chromatographic response factor) as the criterion for selectivity optimization. After validation, the method was applied to determine carboxylic acids in red and white wines and grape must of the Tarragona region.