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Copper determination in ethanol fuel samples by anodic stripping voltammetry at a gold microelectrode

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Abstract

A linear sweep anodic stripping voltammetric method was developed for copper determination in commercial ethanol fuel samples by using a gold microelectrode. Under the optimized conditions, a linear range from 0.05 to 1.0 μM was obtained, with detection limit of 22 nM. The method was employed to determine copper ions in six commercial ethanol fuel samples and the results were compared with those obtained by FAAS. This study showed that for most samples both methods produced concordant results. However, for two samples, copper is distributed in its labile and complexed forms leading to copper contents contrasting with those obtained by flame atomic absorption spectroscopy (FAAS). It was observed that acidification of the samples is a very efficient way to recover copper from its complexed forms. After acidification, the copper contents obtained were concordant with those obtained by FAAS. Thus, the method can be employed to the reliable copper determination in commercial ethanol fuel samples. Moreover, this is the first work providing some insights about copper speciation in commercial ethanol fuel samples.

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References

  1. Wheals AE, Basso LC, Alves DMC, Amorin HV (1999) Fuel ethanol after 25 years. Trends Biotechnol 17:482

    Article  CAS  Google Scholar 

  2. Macedo IC (1998) Greenhouse gas emissions and energy balances in bio-ethanol production and utilization in Brazil. Biomass Bioenergy 14:77

    Article  Google Scholar 

  3. Rosillo-Calle F, Cortez LAB (1998) Towards proalcool II: a review of Brazilian bioethanol programme. Biomass Bioenergy 14:115

    Article  CAS  Google Scholar 

  4. Sandelim K, Backman R (1999) A simple two-reactor method for predicting distribution of trace elements in combustion systems. Environ Sci Technol 33:4508

    Article  Google Scholar 

  5. Taylor DB, Synovec RE (1993) Chromatographic determination of copper speciation in jet fuel. Talanta 40:495

    Article  CAS  Google Scholar 

  6. Saint’Pierre TD, Frescura VLA, Curtius AJ (2006) The development of a method for the determination of trace elements in fuel alcohol by ETV–ICP-MS using isotope dilution calibration. Talanta 68:957

    Article  CAS  Google Scholar 

  7. Bruning IMRA, Malm EB (1982) Identificação e quantificação das impurezas presentes no etanol. Bol Tec Petrobrás 25:217

    CAS  Google Scholar 

  8. Oliveira AP, Morais M, Neto JAG, Lima EC (2000) Simultaneous determination of Al, Cu, Fe, Mn and Ni in fuel ethanol by GFAAS. Atom Spectrosc 23:39

    Google Scholar 

  9. Saint’Pierre TD, Aucelio RQ, Curtius AJ (2003) Trace elemental determination in alcohol automotive fuel by electrothermal atomic absorption spectrometry. Microchem J 75:59

    Article  CAS  Google Scholar 

  10. Dias FS, Santos WNL, Costa ACS, Welz B, Vale MGR, Ferreira SLC (2007) Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry. Microchim Acta 158:321

    Article  CAS  Google Scholar 

  11. Gomes LAM, Padilha PM, Moreira JC, Dias-Filho NL, Gushiken Y (1998) Determination of metal ions in fuel ethanol after preconcentration on 5-amino-1,3,4-thiadiazole-2-thiol modified silica gel. J Braz Chem Soc 9:494

    Article  CAS  Google Scholar 

  12. Padilha PM, Padilha CCF, Rocha JC (1999) Flame AAS determination of metal ions in fuel ethanol after preconcentration on acid carboxymethylcellulose (CMCH). Chim Anal 18:299

    CAS  Google Scholar 

  13. Roldan PS, Alcântara IL, Castro GR, Rocha JC, Padilla CCF, Padilla PM (2003) Determination of Cu, Ni and Zn in fuel ethanol by FAAS after enrichment in column packed with 2-aminothiazole-modified silica gel. Anal Bional Chem 375:574

    CAS  Google Scholar 

  14. Xie X, Stüben D, Berner Z (2005) The application of microelectrodes for the measurements of trace metals in water. Anal Lett 38:2281

    Article  CAS  Google Scholar 

  15. Lam MT, Murimboh J, Hassan NM, Chakrabarti CL (1999) Competitive ligand exchange/adsorptive cathodic stripping voltammetry (CLE/AdCSV) for kinetic studies of nickel speciation in aqueous environmental samples containing heterogeneous, macromolecular, organic complexants. Anal Chim Acta 402:195

    Article  CAS  Google Scholar 

  16. Bergamini MF, Vital SI, Santos AL, Stradiotto NR (2006) Determinação de chumbo em álcool combustível por voltametria de redissolução anódica utilizando um eletrodo de pasta de carbono modificado com resina de troca iônica Amberlite IR 120 Eclet. Quim 31:45

    CAS  Google Scholar 

  17. Oliveira MF, Saczk AA, Okumura LL, Fernandes AP, Moraes M, Stradiotto NR (2004) Simultaneous determination of zinc, copper, lead, and cadmium in fuel ethanol by anodic stripping voltammetry using a glass carbon–mercury–film electrode. Anal Bioanal Chem 380:135

    Article  CAS  Google Scholar 

  18. Munoz RAA, Angnes L (2004) Simultaneous determination of copper and lead in ethanol fuel by anodic stripping voltammetry. Microchem J 77:157

    Article  CAS  Google Scholar 

  19. Tartarotti FO, Oliveira MF, Balbo VR, Stradiotto NR (2006) Determination of nickel in fuel ethanol using a carbon paste modified electrode containing dimethylglyoxime. Microchim Acta 155:397

    Article  CAS  Google Scholar 

  20. Takeuchi RM, Santos AL, Padilha PM, Stradiotto NR (2007) A solid paraffin-based carbon paste electrode modified with 2-aminothiazole organofunctionalized silica for differential pulse adsorptive stripping analysis of nickel in ethanol fuel. Anal Chim Acta 584:295

    Article  CAS  Google Scholar 

  21. Takeuchi RM, Santos AL, Padilha PM, Stradiotto NR (2007) Copper determination in ethanol fuel by differential pulse anodic stripping voltammetry at a solid paraffin-based carbon paste electrode modified with 2-aminothiazole organofunctionalized silica. Talanta 71:771

    Article  CAS  Google Scholar 

  22. Buffle J, Tercier-Waeber M-L (2005) Voltammetric environmental trace-metal analysis and speciation: from laboratory to in situ measurements. Trends Anal Chem 24:172

    Article  CAS  Google Scholar 

  23. Baldo MA, Danielle S (2006) Voltammetric monitoring and speciation of copper ions in Italian “grappa” with platinum microelectrodes. Electroanalysis 18:633

    Article  CAS  Google Scholar 

  24. Abdelsalam ME, Denuault G, Daniele S (2002) Calibrationless determination of cadmium, lead and copper in rain samples by stripping voltammetry at mercury microelectrodes—effect of natural convection on the deposition step. Anal Chim Acta 452:65

    Article  CAS  Google Scholar 

  25. Hutton EA, Ogorevic B, Hocevar SB, Smyth MR (2006) Bismuth film microelectrode for direct voltammetric measurement of trace cobalt and nickel in some simulated and real body fluid samples. Anal Chim Acta 557:57

    Article  CAS  Google Scholar 

  26. Palchetti I, Laschi S, Mascini M (2005) Miniaturised stripping-based carbon modified sensor for in field analysis of heavy metals. Anal Chim Acta 530:61

    Article  CAS  Google Scholar 

  27. Legeai S, Soropogui K, Cretinon M, Vittori O, Oliveira AH, Barbier F, Loustalot MFG (2005) Economic bismuth-film microsensor for anodic stripping analysis of trace heavy metals using differential pulse voltammetry. Anal Bioanal Chem 383:839

    Article  CAS  Google Scholar 

  28. Feinberg JS, Bowyer WJ (1993) Heavy metal determination and speciation: anodic striping voltammetry employing microelectrodes. Michrochem J 47:72

    Article  CAS  Google Scholar 

  29. Tysczuk K, Korolczuk M (2007) Fast simultaneous adsorptive stripping voltammetric determination of Ni(II) and Co(II) at lead film electrode plated on gold substrate. Electroanalysis 19:1539

    Article  Google Scholar 

  30. Xie X, Berner Z, Stüben D, Albers J (2005) Electrochemical behavior and analytical performance of an iridium-based ultramicroelectrode array (UMEA) Sensor. Microchim. Acta 150:137

    Article  CAS  Google Scholar 

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Acknowledgements

Part of this work was developed at Minho University, Portugal, in a cooperation project. The authors are grateful to CAPES contract no. BEX 1088068 (ALS) and BEX 1087061 (RMT) for financial support for this project. The authors also thank the financial support from FAPESP (contract no. 03/05567-7 (ALS) and no. 03/09334-7 (RMT)). ALS and RMT are grateful to Prof. Maria José Medeiros, and especially to her student Cristina S. S. Neves for all help and friendship.

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Authors and Affiliations

  1. Universidade Estadual Paulista (UNESP), Araraquara, SP, 14801-970, Brazil

    Regina M. Takeuchi, André L. Santos & Nelson R. Stradiotto

  2. Centro de Química, Universidade do Minho, Largo do Paço, Braga, 4704-553, Portugal

    Maria J. Medeiros

Authors
  1. Regina M. Takeuchi
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  2. André L. Santos
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  3. Maria J. Medeiros
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  4. Nelson R. Stradiotto
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Correspondence to Nelson R. Stradiotto.

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Takeuchi, R.M., Santos, A.L., Medeiros, M.J. et al. Copper determination in ethanol fuel samples by anodic stripping voltammetry at a gold microelectrode. Microchim Acta 164, 101–106 (2009). https://doi.org/10.1007/s00604-008-0039-9

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  • DOI: https://doi.org/10.1007/s00604-008-0039-9

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