FIELD: chemistry.
SUBSTANCE: invention relates to electro-analytical chemistry. method of determining glutathione in standard test aqueous solutions via cyclic voltammetry on a graphite electrode involves modifying the graphite electrodes with colloidal gold particles from a gold sol for 300 s with electrical accumulation potential of -1.0 V, followed by recording of inverse maxima of electro-oxidation of glutathione on the cathode curve with potential sweep rate of 100 mV/s on a background of 0.1 M solution of NaOH in the potential range of -1.0 V to 1.0 V; concentration of glutathione is determined from the value of inverse maxima of current versus voltage curves in the potential range from -0.20 V to +0.10 V relative a saturated silver chloride electrode by a standard addition method.
EFFECT: more sensitive method of determining glutathione in standard test aqueous solutions using a cyclic voltammetry method.
2 ex, 2 tbl, 2 dwg
