Helena Redigolo Pezza is Professor of Analytical Chemistry at the Paulista State University (UNESP), Araraquara–SP, Brazil. She obtained her B.Sc. in Chemistry (1985), and M.Sc. in Analytical Chemistry (1989) from the Paulista State University (UNESP) at Araraquara-SP, Brazil. She obtained her Ph.D. in Analytical Chemistry (1997) from the University of São Paulo (USP) at São Paulo, Brazil. Her research interests are in the areas of sensor, flow injection analysis, supercritical fluid extraction, paper based analytical device and applications to clinical, food, forensic, and environmental chemistry. Her research work is focused on the development of green analytical methodologies.