A Sensitive Voltammetric Method for the Determination of Diazinon Insecticide
Tóm tắt
A sensitive voltammetric method is developed for the determination of diazinon, an organophosphorus pesticide, using a Nafion®-coated glassy carbon electrode as an enrichment film. The analysis of diazinon in aqueous solutions using sensitive instrumental methods has gained importance. Investigation of the electrochemical behavior of diazinon on a Nafion®-coated glassy carbon electrode reveals the presence of a specific oxidation peak of analytical significance. The experimental parameters, such as pH, film thickness, preconcentration potential, preconcentration time, and square-wave voltammetric parameters were optimized. Using this method, a linear calibration curve for diazinon was obtained up to 5 μM range in pH 1 citrate buffer solution with a detection limit (S/N = 3) of 75 nM.
Tài liệu tham khảo
Draper, W.M. and Stree, J.C., Bull. Environ. Contam. Toxicol., 1981, vol. 26, p. 530.
Shaw, A., Lin, Y.J., and Pfeil, E.B., Environ. Contam. Toxicol., 1997, vol. 59, no. 3, p. 389.
Abu-Quare, A.A. and Abou-Donia, M.B., J. Chromatogr. Sci., 2001, vol. 39, no. 5, p. 200.
Delhom, N., Balanant, Y., Ader, J.C., et al., J. Liquid Chromatogr., 1996, vol. 19, no. 11, p. 1735.
Chairns, T., Siegmund, E.G., and Frobery, J.E., Bull. Environ. Contam. Toxicol., 1985, vol. 35, p. 291.
Everett, W.R. and Rechnitz, G.A., Anal. Chem., 1998, vol. 70, p. 807.
Shin, S.W., Chung, N.I., Kim, J.S., et al., J. Environ. Sci. Heal B, 2001, vol. 36, no. 6, p. 783.
Zen, J.-M., Jou, J.-J., and Ilangovan, G., Analyst, 1998, vol. 123, p. 118.
Zen, J.-M. and Hsu, C.-T., Talanta, 1998, vol. 46, p.1368.
Zen, J.-M., Chen, I.-L., and Shih, Y., Anal. Chim. Acta, 1998, vol. 369, p. 101.