Pulse alternating-current technique of amperometric measurements. Determination of benzoquinone and phenol

A technique for pulsed alternating-current measurements of the electrochemical reaction current is proposed. It differs from the classical and normal pulsed amperometric versions in that the range of the working electrode potentials is selected in the half-wave potential of determined component, and not in limiting diffusion current, and alternating-current scanning is superimposed on the impulse front. Optimal conditions for benzoquinone and phenol detection are selected. Linear dependence of analytical signal on the concentration of these substances was obtained.