Direct simultaneous determination of Pb(II) and Cu(II) in biodiesel by anodic stripping voltammetry at a mercury-film electrode using microemulsions
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Data
2013-01-01
Autores
Martiniano, Lorena C.
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.
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Resumo
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.
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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
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Fuel, v. 103, p. 1164-1167.