Publikace detail

Voltammetric behavior of insecticide imidacloprid on silver solid amalgam electrode

Autoři: Štěpánková Michaela | Šelešovská Renáta | Janíková-Bandžuchová Lenka | Chýlková Jaromíra

Rok: 2014

Druh publikace: ostatní - článek ve sborníku

Název zdroje: EMEC 15 Book of Abstracts

Název nakladatele: Vysoké učení technické v Brně

Místo vydání: Brno

Strana od-do: 131

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Voltammetric behavior of insecticide imidacloprid on silver solid amalgam electrode	In this study the m-AgSAE was used to investigate the electrochemical behavior of the insecticide. All obtained results were compared with those achieved on hanging mercury electrode (HMDE). The parameters of differential pulse voltammetry (DPV) for IMI determination were proposed and also the conditions of regeneration of working electrode surface were optimized. Britton-Robinson buffer of pH 10 (m-AgSAE) and pH 9 (HMDE), respectively, served as a supporting electrolyte. It was found that IMI provides two irreversible cathodic signals corresponding to the insecticide reduction using both tested electrodes. Whereas it has been proved as a diffusion-controlled process the accumulation of IMI was not observed and the method of adsorptive stripping voltammetry could not be used for increasing of sensitivity of IMI determination. The value of LOD for determination of IMI was calculated as 36.2 nmol/L (m-AgSAE) and 2.6 nmol/L (HMDE), respectively. The proposed new method was successfully applied for determination of the insecticide in practical samples of pesticide preparation and spiked river water.	Voltammetry; silver solid amalgam electrode; insecticides; imidacloprid

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