Evaluation of a carbon paste electrode modified with organofunctionalised SBA-15 silica in the determination of copper
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Keywords

SBA-15 nanostructured silica
carbon paste electrode
2-benzothiazolethiol
copper(II)

How to Cite

Cesarino, I., Marino, G., Matos, J. do R., & Cavalheiro, Éder T. G. (2007). Evaluation of a carbon paste electrode modified with organofunctionalised SBA-15 silica in the determination of copper. Eclética Química, 32(2), 29–34. https://doi.org/10.26850/1678-4618eqj.v32.2.2007.p29-34

Abstract

The performance of a carbon paste electrode (CPE) modified with SBA-15 nanostructured
silica organofunctionalised with 2-benzothiazolethiol for determination of Cu(II) ions in sugar cane spirit
(cachaça) is described, based on differential pulse anodic stripping voltammetry (DPASV) procedure.
The Cu(II) oxidation peak was observed at – 0.03 V (vs. SCE) in phosphate solution (pH 3.0). The results
were obtained using optimised conditions such as 100 mV pulse amplitude, 3 min accumulation time, 25
mV s -1 scan rate in phosphate solution pH 3.0, resulting in a linear dynamic range from 8.0 x 10 -7 to 1.0 x
10 -5 mol L -1 Cu(II) and a limit of detection 2.0 x10 -7 mol L -1 . Cu(II) spiked in a cachaça sample was
determined with 102.5 % mean recovery at mmol L -1 level. Interference from other metallic cations present
in the sample was avoided by the standard addition procedure.
https://doi.org/10.26850/1678-4618eqj.v32.2.2007.p29-34
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References

D. E. De Vos, M. Dams, B. F. Sels, P. A.

Jacobs, Chem. Rev. 102 (2002) 3615.

D. Zhao, J. Feng, Q. Huo, N. Melosh, G. H.

Fredrickson, B. F. Chmelka, G. D. Stucky, Science

(1998) 548.

D. Zhao, Q. Huo, J. Feng, B. F. Chmelka, G. D.

Stucky, J. Am. Chem. Soc. 120 (1998) 6024.

B.-G. Park, W. Guo, X. Cui, J. Park, C.-S. Ha,

Microporous Mesoporous Mater. 66 (2003)

S. Inagaki, S. Guan, Y. Fukushima, T. Ohsuna, O.

Terasaki, J. Am. Soc. 121 (1999) 9611.

Y. Shan and L. Gao, Mater. Chem. Phys. 89 (2005)

A. Walcarius, Electroanalysis 8 (1996) 971.

A. Walcarius, Chem. Mater. 13 (2001) 3351.

S. V. Prabhu, R. P. Baldwin, L. Kryger, Anal.

Chem. 59 (1987) 1074.

T. Molina-Holgado, J. M. Pinilla-Macias, L.

Hernández-Hernández, Anal. Chim. Acta 309 (1995)

B. Ogorevc, X. H. Cai, I. Grabec, Anal. Chim.

Acta 305 (1995) 176.

M. F. Mousavi, A. Rahmani, S. M. Golabi, M.

Shamsipur, H. Sharghi, Talanta 55 (2001) 305.

N. L. Dias Filho, L. Caetano, D. R. Carmoa, A.

H. Rosa, J. Braz. Chem. Soc. 17 (2006) 473.

V. Beni, V. I. Ogurtsov, N. V. Bakunin, D. W. M.

Arrigan, M. Hill, Anal. Chim. Acta 552 (2005) 190.

J. Buffle and M.-L. Tercie, Trends in Anal.

Chem. 24 (2005) 172.

D. G. Barceloux, Clin. Toxicol. 37 (1999) 217.

M. Etienne, J. Bessiere, A. Walcarius, Sens.

Actuators B 76 (2001) 531.

Ministério da Agricultura; Complementação

de Padrões de Identidade e Qualidade para

Destilados Alcóolicos; Portaria no 371; Brasília

P. J. S. Barbeira, L. H. Mazo, N. R. Stradiotto,

Analyst 120 (1995) 1647.

F. N. Crespilho, R. A. Messias, M. O. O.

Rezende, Anais da Associação Brasileira de

Química

(2002) 63.

J. R. Matos, L. P. Mercuri, M. Kruk, M. Jaroniec,

Chem. Mater. 13 (2001) 1726.

G. Marino, M. F. Bergamini, M. F. S. Teixeira, E.

T. G. Cavalheiro, Talanta 59 (2003) 1021.

G. Marino, I. Cesarino, E. T. G. Cavalheiro, Acaij

(2006) 37.

B. D. Ripley and M. Thompson, Analyst 112

(1987) 377.

D.C. Harris, Quantitative Chemical Analysis,

th Edition, Freeman, New York, 1995, p. 66.

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