1. Department of Technical Physics Faculty of Mechanical Engineering and Mechatronic West Pomeranian University of Technology in Szczecin Al. Piastow 48 70-311 Szczecin Poland
2. Department of Inorganic and Analytical Chemistry Faculty of Chemical Technology and Engineering West Pomeranian University of Technology in Szczecin Al. Piastow 42 71-065 Szczecin Poland.