Determination of polychlorinated biphenyls by means of electrochemical methods

Determination of polychlorinated biphenyls (PCBs) in a technical mixture - DELOR 103 - by means of several electroanalytical methods as polarography ( DC), alternating polarography (AC), fast differential pulse voltammetry (FD PV) and cyclic voltammetry (CV) in nonaqueous media is described. Direct el ectroreductive PCB determination in aqueous media is not possible in the av ailable potential range but it is possible by a tensammetric determination using adsorptive properties of PCB in buffered neutral water-methanol solut ions. The possibilities of adsorptive electrochemical determination of PCBs and t he effects of experimental conditions have been studied by adsorptive cycli c voltammetry (AdCV) and adsorptive alternating voltammetry (AdAV).