This work presents a voltammetric method for Zn2+ determination in antiseptic dusting powder and multivitamin commercial samples, combining an alkaline extraction using NaOH aqueous solution with a carbon paste electrode chemically modified with Bi anchored on Amberlite® IR120 ion exchange resin (CPEAmb/Bi). The best conditions for electrode preparation were: 10% (m/m) of Amberlite® IR 120; 30 s Bi3+ accumulation time (open circuit) in 0.5 mmol L-1 Bi3+ solution prepared in 0.1 mol L-1 acetate buffer (pH = 5.5). The analytical curve for Zn2+ using the CPEAmb/Bi presented linear range from 0.05 to 8.2 μmol L-1 and the limit of detection was 10 nmol L-1. The voltammetric method was simple, fast, efficient and low-cost for the Zn2+ determination in antiseptic dusting powder and multivitamin samples.
CITATION STYLE
Fonseca, W. T., Ribeiro, L. A. R., Pradela-Filho, L. A., Takeuchi, R. M., & Santos, A. L. (2018). Voltammetric determination of Zn2+ in antiseptic dusting powder and multivitamins using a carbon paste electrode modified with Bi anchored on amberlite® IR120. Journal of the Brazilian Chemical Society, 29(12), 2466–2474. https://doi.org/10.21577/0103-5053.20180124
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