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Organic/Water Interface Electrochemistry for the Direct Detection of a Model Pesticide in Soybean Oil
Author(s) -
Maynart M. C.,
Silva R. M. P.,
Suffredini H. B.
Publication year - 2013
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201300125
Subject(s) - carbendazim , electrochemistry , soybean oil , aqueous two phase system , pesticide , aqueous solution , chemistry , phase (matter) , materials science , electrode , chemical engineering , organic chemistry , fungicide , botany , food science , agronomy , biology , engineering
An electrochemical methodology was applied directly at an organic/water interface to detect a pesticide directly in oil, without the necessity of pre‐treatment of the sample. The oil phase was composed of soybean oil contaminated with carbendazim (methyl‐2‐benzimidazolecarbamate), and the aqueous phase consisted of a conventional BrittonRobinson buffer with a pH of 2. A boron‐doped diamond (BDD) electrode was placed directly at the interface of the two immiscible liquids. The ionic strength played an important role in the oxidation of carbendazim in our interfacial studies, as indicated by the oxidation currents varying from zero to 12 µA, depending on the position of the electrode.