Repozytorium publikacji - Politechnika Gdańska

Two different type of electrodes, boron-doped diamond electrode (BDD) and boron-doped carbon nanowalls (B:CNW) electrode, were used for the electrochemical determination of paracetamol using the cyclic voltammetry and the differential pulse voltammetry in phosphate buffered saline, pH = 7.0. The main advantage of these electrodes is their utilization without any additional modification of the electrode surface. The peak current was linearly related to the concentration of paracetamol in the range from 0.065 µM to 32 µM for BDD electrode and from 0.032 µM to 32 µM for B:CNW electrode. The limit of detection was 0.430 µM and 0.281 µM for BDD and B:CNW electrode, respectively. Additionally, we studied the effect of pH on the redox reaction of paracetamol at the both electrodes in Britton-Robinson buffer solution in the range of pH 3.0–12.0, indicating the pH 7.0 value as the most suitable for the current experiments. The studies also included the various scan rates in range of 50–500 mV/s. Finally, our team selected the B:CNW electrode for the determination of paracetamol in the artificial urine sample using differential pulse voltammetry method, obtaining the calculated limit of detection on the level of 0.08006 µM.

Autorzy

• Dr Paweł Niedziałkowski,
• Zofia Celuba,
• Natalia Malinowska,
• mgr inż. Wioleta Białobrzeska,
• dr hab. inż. Michał Sobaszek link otwiera się w nowej karcie ,
• dr inż. Mateusz Ficek link otwiera się w nowej karcie ,
• dr hab. inż. Robert Bogdanowicz link otwiera się w nowej karcie ,
• dr hab. med. Jacek Sein Anand,
• prof. dr hab. inż. Tadeusz Ossowski