Kinetic determination of silver ion by its perturbation on Belousov-Zhabotinskii oscillating chemical reaction using potentiometric method. |
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| Authors: | Jahan-Bakhsh Raoof Reza Ojani Abolfazl Kiani |
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| Institution: | Electroanalytical Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Science, Mazandaran University, Babolsar, Iran. j.raoof@umz.ac.ir |
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| Abstract: | Silver ion can perturb the Belousov-Zhabotinskii (B-Z) oscillating chemical reaction. Therefore, the B-Z oscillating system was applied in the determination of silver ion by using a platinum wire as an indicator electrode in the potentiometric method. The amplitude of the potentiometric oscillation increased linearly in proportion to Ag+] in the range of 9.42 x 10(-6) M to 2.54 x 10(-4) M, with a correlation coefficient of 0.999 under the optimum conditions. The obtained LOD (2sigma) was 8.85 x 10(-6) M and the relative standard deviation (RSD) for five measurements of 1 x 10(-4) M silver ion was 5%. The influence of some potentially interference was also investigated. |
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