Desenvolvimento de Candidatos à Materiais de Referências com Aplicação em Química Forense

Abstract

The area of forensic chemistry has been growing and developing more and more as a research line in Brazil, and thus requires increasingly reliable results due to its importance in criminalistics. Thus, the development of new technologies that help this area, whether in the identity and quantification of drugs or in the fight against fraud, become promising. In this context, the present work explored the development of reference materials from the purification of drug samples seized by the Civil Police of the State of Espírito Santo (PCES), cocaine, crack and ecstasy tablets. The samples were isolated by croamtographic techniques. Benzoylecgonic was synthesized from cocaine alone. All substances were characterized by mass spectrometry and nuclear magnetic resonance. Homogeneity and stability studies were conducted with benzylecgonin, and the results were evaluated by variance analysis (ANOVA). Studies with europium III complexes have also been carried out for application in the fight against document and gasoline fraud. The complexes [Eu(pic)3(DVL)3], [Eu(pic)3(EPK)3] and [Eu(pic)3(OEN)3] were evaluated as new luminescent markers for application as security elements in Brazilian banknotes. And the complex [Eu(TTA)3(PRD)(H2O)] was studied to be applied as a luminescent sensor to combat adulteration of gasoline as ethanol.