1. Analytical Instruments Department, Shimadzu d.o.o., Zagreb, Croatia
2. Faculty of Chemical Engineering and Technology, Department of Analytical Chemistry, University of Zagreb, Zagreb, Croatia
3. Laboratorij Quanta, Quanta d.o.o, Rakov Potok, Croatia
4. Catalan Institute for Water Research (ICRA), H2O Building, Scientific and Technological Park of the University of Girona, Girona, Spain