1. Department of Biochemical Engineering and Biotechnology Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11000 Beograd Serbia
2. Innovation Center Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11000 Beograd Serbia
3. Directorate of Measures and Precious Metals Group for Metrology in Chemistry Mike Alasa 1411000 Beograd Serbia