METHOD FOR QUANTITATIVE DETERMINATION OF SALICIN BY VOLTAMMETRY ON A GLASS-CARBON ELECTRODE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to analytical chemistry, particularly to a voltammetric method for determining salicin. Method for quantitative determination of salicin includes its preliminary hydrolysis in 0.1 M while heating to 90 °C for 1 hour and voltammetric determination in a two-electrode system from an anode peak on a glass-carbon electrode obtained by hydrolysis of the corresponding saligenin alcohol, wherein the accumulation of saligenin in the stirred solution is carried out while bubbling with an inert gas for 30 s at a potential of -0.4 V relative to the saturated SCE on a background electrolyte of 0.1 M Na2HPO4 with subsequent recording of anode peaks in differential mode of recording voltamperograms at potential sweep rate of 25–30 mV/s, salicin concentration is determined by the saligenin peak height in the potential range of 0.7–0.8 V by the method of one standard.;EFFECT: determination of salicin concentration by voltammetry.;1 cl