Marco Aurélio Zezzi Arruda is Full Professor at the University of Campinas – Unicamp (Campinas, Brazil), Department of Analytical Chemistry, head of the Sample preparation, spectrometry and mechanization group - GEPAM, and member of the advisory board of the National Institute of Science and Technology - INCT for Bioanalitics. Additionally, he acted as invited professor at Pau University – Pau, France, and at University of Ballears Island – Palma, Mallorca, Spain. The main research lines of his research group include bioanalytical with emphasis on metallomics and proteomics, mass (ICP-MS, LA-ICP-MS, MALDI-QTOF-MS, ESI-MS, TWIMS) and atomic spectrometry (ICP OES, ETAAS, FAAS, TS-FF-AAS), sample preparation, forensic and mechanization. His current research interests include trans-disciplinary work involving speciation analysis and comparative omics of plants (i.e. soybean, sunflower, Arabidopsis Thaliana) and human body fluids (i.e. blood serum, urine, saliva) to identify possible biomarkers for transgenic species and human diseases, as well as to evaluate reactive oxygen species production, and (metallo)proteins responses under stress in a given system.