Simultaneous determination of antinonin and trifluralin by electrochemical method and net analyte signal interferent modeling
Autor: | Masoud Shariati-Rad, Mohsen Irandoust, Maryam Haghighi |
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Rok vydání: | 2019 |
Předmět: |
Detection limit
Analyte Chromatography 010401 analytical chemistry Trifluralin 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Standard addition Electrode Graphite Cyclic voltammetry 0210 nano-technology Spectroscopy |
Zdroj: | Microchemical Journal. 146:34-40 |
ISSN: | 0026-265X |
DOI: | 10.1016/j.microc.2018.12.055 |
Popis: | Antinonin and trifluralin are selective herbicides to control the insects and usually used with each other. Simultaneous determination of antinonin and trifluralin has been investigated, using modified carbon paste electrode (CPE) prepared from: graphite, multi-walled carbon nanotubes (MWCNT) and nanomagnetic core-shell (Fe3O4/SiO2). Cyclic voltammetry (CV) and square wave voltammetry (SWV) studies indicated two-oxidation peak for antinonin and one oxidation peak for trifluralin from 0 to +0.6 V. For simultaneous determination of antinonin and trifluralin severe overlap of the voltammogram profiles was observed. It was shown that the electrochemical profile of the analytes changes in the presence of each other. Therefore, results of the analysis of antinonin and trifluralin by H-point standard addition method in their mixtures in water samples were not satisfactory. In order to determine antinonin and trifluralin simultaneously, net analyte signal interferent modeling (NAS-IM) was used. The proposed sensor was found that is able to determine antinonin and trifluralin with a detection limit of 0.3 and 3 nM, respectively. The method was successfully applied for the assay of antinonin and trifluralin simultaneously in water samples. |
Databáze: | OpenAIRE |
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