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Voltammetric determination of low concentrations of growth stimulators in plant material using boron-doped diamond electrode

Authors: Chýlková Jaromíra | Usenko Alona | Šelešovská Renáta | Sedlák Miloš

Year: 2022

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Voltammetric determination of low concentrations of growth stimulators in plant material using boron-doped diamond electrode	Pesticides are often used in the cultivation of fruits and vegetables to reduce production losses, increase the quality of the produce and prolong the necessary quality and shelf life of these commodities after harvest [1]. In most cases, these substances are stable, bioaccumulative and thus contaminate the components of the environment [2]. In particular, consumers of these products [3-4] and useful insects [6] are at risk. Often applied substances for these purposes include daminozide, paclobutrazole, mefentrifluconazole, etc. The voltammetric determination of these substances is performed using electrochemical oxidation on BDDE electrode at a very positive potential. BDDE was chosen due to its excellent electrochemical properties, including a wide available potential window (3 V), low background current, low current noise, good chemical resistence, resistance to passivation, and high hardness [5]. From the plant matrix, ethanol extract of the analyte was isolated using 1 g AmberliteR IRC120 H ion-exchange resin in H+cycle. The capture was carried out at laboratory temperature for 1 h with stirring at 700 rpm. After that, the ionex was separated and subsequently extracted with 5 ml of 1 mol L1 NaOH at 70 °C under stirring at 500 rpm for 20 min. The resulting solution was subjected to voltammetric analysis.	Voltammetric determination; growth stimulators; plant; boron-doped; diamond; electrode