Voltammetric determination of oxidizable derivatives of aromatic hydrocarbons using screen printed electrode

Development of the cheap, fast and reliable methods for the determination of aminoderivatives of polycyclic aromatic hydrocarbons has great significance not only for analytical chemistry, but mainly for human, because most of these compounds are either suspected or even proven carcinogens. This work deals with the determination of two proven carcinogens 2-aminonaphthalene (2-AN) and 4-aminobiphenyl (4-ABP) using screen printed carbon electrodes (SPCE). Using the methods of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) properties and behavior of these electrodes were investigated. The possibility of the activation with phosphate buffer, pH = 7, was observed and the cleaning of the electrode using electrochemical cycling was demonstrated. Using DPV the detection limit of 2-AN 16 µmol·dm-3 and of 4-ABP 7,3 µmol·dm-3 was reached in B-R buffer pH = 12