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Determination of trace metals and imidacloprid at carbon paste electrode surface modified with antimony nanoparticle-multiwalled carbon nanotubes composite

Rok: 2014

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

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Jazyk	Název	Abstrakt	Klíčová slova
eng	Determination of trace metals and imidacloprid at carbon paste electrode surface modified with antimony nanoparticle-multiwalled carbon nanotubes composite	Antimony nanoparticle-multiwalled carbon nanotubes composite (SbNPs-MWCNT) was obtained by modified way of earlier reported synthesis. Byly synte and was characterized by TEM and XRD. The applicability of such type of material was tested as surface modifier of carbon paste electrode(SbNPs-MWCNT-CPE). The modified electrode was used for determination of Pb(II) and Cd(II) by square-wave anodic stripping voltammetry, and for measurement of organic compound imidacloprid with nitroguanidine electroactive functional group reducible in fairly negative potential range. Key operational parameters such as deposition potential and time as well as the supporting electrolyte composition (hydrochloric acid pH 2.0 for target metal ions and Britton-Robinson buffer pH 7.0 for imidacloprid) were optimized.The electrode of interest exhibited well-developed signals and fully linear calibration plots for both metal ions tested in the concentration range from 3.0 to 50.0 μg L-1. For the neonicotinoid insecticide the concentration range was from 1.4 to 32.7 mg L-1. In the case of all investigated target analytes	Hevy metals; imidacloprid; carbon paste electrode; voltammetry

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