Direct simultaneous determination of Pb(II) and Cu(II) in biodiesel by anodic stripping voltammetry at a mercury-film electrode using microemulsions

• Autor(a) principal: Martiniano, Lorena C.
• Data de Publicação: 2013
• Outros Autores: Abrantes, Vivia R., Neto, Sakae Y., Marques, Edmar P., Fonseca, Teresa C.O., Paim, Leonardo L. [UNESP], Souza, Antônio G., Stradiotto, Nelson Ramos [UNESP], Aucélio, Ricardo Q., Cavalcante, Glene H.R., Marques, Aldaléa L.B.
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.fuel.2012.07.002; http://hdl.handle.net/11449/74171
• topic: Anodic stripping voltammetry; Biodiesel microemulsion; Mercury film electrode; Concentration ranges; Detection limits; Linear response; Mercury film electrodes; Simultaneous determinations; Biodiesel; Lead; Mercury (metal); Voltammetry; Microemulsions

A mercury film electrode was used to determine direct and simultaneously Pb(II) (at -410 mV) and Cu(II) (at -100 mV) in biodiesel by anodic stripping voltammetry. A linear response was obtained for Pb(II) and Cu(II) in the 2.00 × 10-8-1.00 × 10-7 mol L-1 concentration range and detection limits were 2.91 × 10-9 mol L-1 and 4.69 × 10-9 mol L-1 for Pb(II) and Cu(II), respectively, with recovery around of 100.0%. © 2012 Elsevier Ltd. All rights reserved.