1. HUSM – University Hospital of Santa Maria, Pharmacy Sector (SFH), 1000 Roraima Ave, Santa Maria, RS, 97105-900, Brazil
2. UFSM – Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 1000 Roraima Ave, Santa Maria, RS, 97105-900, Brazil