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metadata.artigo.dc.title: New voltammetry-based analytical method for indirect determination of procymidone in brazilian apples
metadata.artigo.dc.creator: Fulgêncio, Ana Carolina da Costa
Saczk, Adelir Aparecida
Oliveira, Marcelo Firmino de
Okumura, Leonardo Luiz
metadata.artigo.dc.subject: Procymidone
Brazilian apple
Differential pulse voltammetry
Square-wave voltammetry
metadata.artigo.dc.publisher: Springer US 16-Jun-2016
metadata.artigo.dc.identifier.citation: FULGÊNCIO, A. C. da C. et al. New voltammetry-based analytical method for indirect determination of procymidone in brazilian apples. Food Analytical Methods, [S.l.], v. 7, n. 1, p. 31-38, Jan. 2014.
metadata.artigo.dc.description.abstract: Procymidone, a potentially carcinogenic and mutagenic pesticide, can contribute to environmental and human contamination when applied to apple crops. In this work, we propose a reliable and sensitive method to determine procymidone in Brazilian apples. The method involves differential pulse (DPV) and square-wave voltammetry (SWV) techniques on a glassy carbon electrode. In a supporting electrolyte solution of 0.5 mol L−1 NaOH, procymidone undergoes an irreversible one-electron oxidation at +1.42 V by cyclic voltammetric vs. Ag|AgCl, KCl 3 M reference electrode. The proposed DPV and SWV methods have a good linear response in the 8.00–20.0 mg L−1 range, with limits of detection (LOD) of 0.678 and 0.228 mg L−1, respectively, in the absence of the matrix. We obtained improved LOD (0.097 mg L−1) in the presence of apple matrix and the supporting electrolyte solution. We used three commercial apple samples to evaluate recovery, and we achieved recovery percentages ranging from 94.6 to 110 % for procymidone determinations. We also tested the proposed voltammetric method for reproducibility, repeatability, and potential interferents, and the results were satisfactory for electroanalytical purposes.
metadata.artigo.dc.language: en_US
Appears in Collections:DQI - Artigos publicados em periódicos

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