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The Use of Diamond Electrodes in the Interface Biodiesel/Water |
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| Authors: | Marlon C. Maynart Rafael Q. Ferreira Hugo B. Suffredini |
| Affiliation: | Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, Rua Santa Adélia 166, Bairro Bangu, CEP 09210‐170, Santo André, SP, Brazil tel: +55?11?4996‐0170, fax: +55?11?4437‐1600 ext 804 |
| Abstract: | A boron‐doped diamond electrode was used at the interface of biodiesel and water in conjunction with square‐wave voltammetry to promote the detection of a model molecule (ferrocene). The addition of LiClO4 to the oil phase increased the detection of ferrocene five‐fold as compared with an unsupported oil phase. A cathodic surface pretreatment of the BDD electrode caused no oscillation of currents and promoted a high stability within the system. Our successful use of this system suggests the possibility for its application in the analysis of other contaminants within biodiesel including liposoluble pesticides and glycerol. |
| Keywords: | Oil/water interface Electrochemistry Biodiesel Ferrocene |