METHOD FOR VOLTAMMETRIC DETERMINATION OF PHENOL IN WATER AND WATER BODIES Russian patent published in 2015 - IPC G01N27/48 

FIELD: chemistry.

SUBSTANCE: invention relates to electroanalytical chemistry and can be used to analyse drinking water surface water and other water bodies. A method for voltammetric determination of phenol in water and water bodies using a three-electrode system, which includes pre-modifying electrochemical treatment of a glass-carbon indicator electrode of the system, measuring phenol concentration in the water, including electrochemical deposition of phenol on the modified surface of the indicator electrode from the analysed water, subsequent electrooxidation of phenol while varying potential of the indicator electrode, detecting an analytical signal on the current versus voltage curve, identifying a phenol peak on the current versus voltage curve and determining phenol concentration from the value of the phenol peak, characterised by that pre-modifying electrochemical treatment of the indicator electrode is carried out in 0.2 M aqueous ammonium sulphate solution with addition of acetone in volume ratio of 19:1, respectively. A method in which electrodes of the measurement system - indicator, comparison and auxiliary electrodes - used are identical glass-carbon rod electrodes, and where pre-modifying electrochemical treatment of the indicator electrode also includes treating the surface of the comparison electrode and the auxiliary electrode in 0.1 M aqueous potassium hydroxide solution with addition of acetone in volume ratio of 19:1, respectively.

EFFECT: improved method.

3 cl