**About the Editors**

#### **Gavino Sanna**

Gavino Sanna received the master's degree in chemistry from the University of Sassari (Sardinia, Italy). After spending five years at the EniChem Research Centre in Porto Torres, Italy, he became Assistant Professor of Analytical Chemistry at the Department of Chemistry at the University of Sassari. He is currently Associate Professor of Analytical Chemistry in the Department of Chemical, Physical, Mathematical, and Natural Sciences at the University of Sassari. In 2018, he received the scientific qualification (called Abilitazione Scientifica Nazionale in Italian) as a full professor in analytical chemistry. He has published more than 100 papers, and several books, book chapters, and patents. His general interest in research is focused on assessing, validating and applying on real samples of instrumental methods for measuring organic and inorganic analytes in food, materials, environmental, and biological matrices. His most representative research lines are the determination and speciation of organic and inorganic minority analytes of interest for the characterization and valorization of traditional Sardinian foodstuffs (e.g., dairy, seafood, and beehive products), the role of irrigation methods in the bioaccumulation of health-threatening elements in rice and on electroanalytical studies on the interaction between metal ions and biologic ligands. He is also published contributions on food safety, on environmental analysis and monitoring, on material sciences and on biomedical analysis.

#### **Stefan Tsakovski**

Stefan Tsakovski received his Ph.D. degree from Sofia University "St. Kliment Ohriski" in 1999 in the field of Analytical Chemistry (Chemometrics). He is currently working as a full-time professor and head of the Chemometrics and Environmetrics Unit in the Department of Analytical Chemistry at the Sofia University "St. Kliment Ohridski". His research interests include a number of areas related to data mining of information derived from chemical experiments, epidemiological studies and environmental monitoring. He is a co-author of two book chapters and over 100 publications in peer-reviewed journals.
