1. Department of Materials Engineering, Federal University of Rio Grande do Norte (UFRN), Natal, 59078-970 Rio Grande do Norte, Brazil
2. Department of Clinical and Toxicological Analyses, UFRN, Natal, 59078-970 Rio Grande do Norte, Brazil
3. Organic Chemistry and Biochemistry Laboratory, State University of Amapá (UEAP), Macapá, 68900-070 Amapá, Brazil
4. Department of Materials Engineering, Federal University of São Carlos (UFSCar), São Carlos, 13565-905 São Paulo, Brazil