1. Maritime University of Szczecin, Faculty of Marine Engineering, Department of Physics and Chemistry, Waly Chrobrego 1-2, 70-500 Szczecin, Poland
2. Koszalin University of Technology, Faculty of Civil Engineering, Environmental, and Geodetic Sciences, Department of Environmental Technologies and Bioanalytics, Sniadeckich 2, 75-453 Koszalin, Poland