CHROMATOGRAPHIC DETERMINATION OF THE ANION CONTENT IN SPANISH RECTIFIED CONCENTRATED MUSTS

The content of major anions in rectified concentrated must (RCM) has b een determined by means of ion chromatography and a conductivity detec tor. Inorganic anions in Spanish RCM were simultaneously analyzed (Cl- , 3 - 17 mg/kg sugar; HPO42, 0 - 1 mg/kg sugar; SO42, 0 - 5.6 mg/kg su gar). Recoveries (%) of the different anions in the studied media vary in the range 96.5 to 102.7. The content of anions in other products ( commercial refined sugar and sulfited must) has also been evaluated. R efined sugar has a higher content of anions than RCM, especially oxala te (7.5 mg/kg sugar) and nitrate (4.5 mg/kg sugar). The studied anions occur in sulfited musts at very high concentrations.