1. Department of Technological and Constructive Engineering, National Institute of Research and Development for Optoelectronics, INOE 2000, Magurele, Romania;
2. INCDO INOE 2000 Research Institute for Analytical Instrumentation, Cluj-Napoca, Romania;
3. Center for Environmental Researches and Impact Studies - CCMESI, University of Bucharest, Bucharest, Romania