Professor of Chemistry, King Saud University

Professor in Aquatic Chemistry, Technical University of Crete

Department of Analytical Chemistry. University of Cordoba.

Professor, Department of Food Science and Technology, Shahid Beheshti University

Assistant professor in chemistry at kust

Professor of Chemistry, University of South Florida, USA

Professor of Analytical Chemistry, Isfahan University of Technology

Professor, Department of Chemistry and Biochemistry, Concordia University

Professor, Dean, Faculty of Information Sciences and Humanities

Professor of Analytical Chemistry, Department of Chemistry, Zabol, Iran