Trabalho apresentado em evento
Direct simultaneous determination of Pb(II) and Cu(II) in biodiesel by anodic stripping voltammetry at a mercury-film electrode using microemulsions
Fecha
2013-01-01Registro en:
Fuel, v. 103, p. 1164-1167.
0016-2361
10.1016/j.fuel.2012.07.002
WOS:000311932200145
2-s2.0-84870502998
0072173018005712
Autor
Universidade Federal do Maranhão (UFMA)
Universidade Federal da Paraíba (UFPB)
DIQUIM-CENPES/PETRÓLEO BRASILEIRO S/A-PETROBRAS
Universidade Estadual Paulista (Unesp)
Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)
Resumen
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.