For electrochemical MTZ determinations MIP-or NIP-coated electrodes were mounted in electrochemical setup described above. Electrodes were immersed in 1 mM Ru(NH3)6Cl3 solution in 0.1 M KCl(aq). After each analyte injection solution was stirred with magnetic stirrer for 0.5-1 min. Then, subsequently CV and DPV curves were recorded. After recording calibration curve, each electrode was discarded and new one was prepared.