Acad. Gh. Duca delivers various lectures and courses at the Universities and Institutions of Moldova as well as Universities and Colleges from abroad.
2018 - Teaching Course on Environmental and Ecological Chemistry, Technical University "Gh. Asachi", Iasi
2018 - Head of international scientific seminar, University "Alexandru Ioan Cuza", Iasi, Romania
2018 - Head of international scientific seminar, Nicolaus Copernicus University, Torun, Poland
2015 - 2021 Guest Professor at Sichuan University of China
2006 - Head of international scientific seminar, INSA, Lyon, France
1994-2016 - Head of national doctoral seminar in chemistry, State University of Moldova
1992-2014 - Member of the Senate of the State University of Moldova
1988-present - Teaching activities as Professor, Faculty of Chemistry and Chemical Technology, State University of Moldova, State University "Dimitrie Cantemir", Republic of Moldova. Topics: Redox Processes in Natural Waters, Ecological Chemistry, Kinetics and Thermodynamics of Ecological Systems, Environmental Risk Assessment.
1985-present - Supervisor of 31 doctoral and postdoctoral students with contribution to their scientific carrier development, including: Dr. Irina Stepanov - University of Minnesota Masonic Cancer Center, USA, Dr. Diana Juc - INSA, Lyon, France, Dr. Veaceslav Boldescu - Ruprecht-Karls-Universität Heidelberg, Germany, Dr. Inga Zinikovscaya - Joint Institute of Nuclear Research, Dubna, Russia, Dr. Iurie Ungureanu - Alexandru Ioan Cuza University, Iași, Romania, Dr. Read Saleh - Jordan University of Science and Technology, Jordan
1985-present - Leadership of the Ecological and Environmental Chemistry Scientific School (include several research centres and laboratories)