1. Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovicova 6, 842 15 Bratislava, Slovakia
2. Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, 708 00, Ostrava-Poruba, Czech Republic
3. Department of Experimental Physics, Faculty of Mathematics, Physics, and Informatics, Comenius University in Bratislava, 842 48 Bratislava, Slovakia
4. College of Electronics and Information Engineering, Shenzhen University, Guangdong Province, 518000, China
5. Division of Environmental Physics, Faculty of Mathematics, Physics, and Informatics, Comenius University in Bratislava, 842 48 Bratislava, Slovakia