Eletrodos de diamante dopado com boro como ferramenta de detecção na interface biodiesel/eletrólito de suporte / Boron-doped diamond electrodes as an interesting detection tool to be used in the biodiesel/support electrolyte interface

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

17/09/2009

RESUMO

This work describes the utilization of a boron-doped diamond electrode (BDD) in conjunction of the Square Wave Voltammetry (SWV) technique, aiming to realize the detection of some organic molecules (Pararosaniline chloride, Dextromethorphan e Benzene) e in aqueous media and in the biodiesel/support electrolyte interface. Different biodiesel samples were synthesized using alcoholic blends (composed by methanol and ethanol) to verify the viability of using ethanol in the biodiesel chain of production. The biodiesel samples were purified and, then, used to promote the electrochemical studies. The electrochemical studies were carried out in acidic media (0.5 mol L-1 H2SO4), a conventional electrolyte. In this study, two pharmaceutical molecules were detected (pararosaniline chloride and dextrometorfane). Then, after prove the effectiveness of the system in aqueous media, some measurements were carried out in the biodiesel / support electrolyte interface to promote the detection of benzene, artificially added in biodiesel samples. Finally, is possible to conclude that the system BDD + SWV can be used in the biodiesel/support electrolyte interface, opening the possibility of detecting pesticides and other organic molecules in native samples of biodiesel.

ASSUNTO(S)

boron-doped diamond electrodes eletroquímica de interface eletroquimica eletrodos de diamante biodiesel detecção eletroquímica interfacial electrochemistry biodiesel electrochemical detection

ACESSO AO ARTIGO

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