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Pakistan Journal of Biological Sciences

Year: 2004 | Volume: 7 | Issue: 10 | Page No.: 1721-1726
DOI: 10.3923/pjbs.2004.1721.1726
Determination of Benzidine Using the Analyte Pulse Perturbation Technique in BZ Oscillating Chemical System
Jinzhang Gao, Kanjun Sun, Wu Yang, Fuwei Yang and Guohu Zhao

Abstract: A simple and sensitive analytical method for the determination of benzidine by the perturbation caused by different amounts of benzidine on the Belousov-Zhabotinskii (BZ) oscillating chemical system involving the Ce (IV)-catalyzed reaction between potassium bromate and malonic acid in a acidic medium is proposed. Results show that a linear relationship between the change in the oscillation amplitude and the concentration of benzidine was existed. The calibration curve is linearly proportional to the concentration of benzidine over the range 3.5x10-9-1x10-4 M, with the regression coefficient is 0.9975. The optimum condition for the determination has been chosen. Influence of temperature and reaction variables were investigated in detail and the possible mechanism caused by the adding of benzidine on the chemical oscillating system was also discussed.

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How to cite this article
Jinzhang Gao, Kanjun Sun, Wu Yang, Fuwei Yang and Guohu Zhao, 2004. Determination of Benzidine Using the Analyte Pulse Perturbation Technique in BZ Oscillating Chemical System. Pakistan Journal of Biological Sciences, 7: 1721-1726.

Keywords: oscillating chemical system, benzidine, analyte and determination

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