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Voltammetric Determination of Herbicide Metamitron Using Mercury and Silver Solid Amalgam Electrode

Authors: Šelešovská Renáta | Bandžuchová Lenka | Hrabovszká Hana | Chýlková Jaromíra

Year: 2013

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Voltammetric Determination of Herbicide Metamitron Using Mercury and Silver Solid Amalgam Electrode	Metamitron is an herbicide of the triazinone group widely used in sugar and fodder beet crops. The high solubility of this compound indicates that it can be highly mobile when applied to soil, and consequently can become an environmental contaminant of surface and ground water. Electrochemical techniques using mercury electrode (HMDE) for metamitron analysis have been described in literature. Silver solid amalgam electrode (AgSAE) represents very good alternative to HMDE. It is the step between mercury electrode and solid electrodes and it combines advantages of the both above-mentioned types. AgSAE has excellent electrochemical properties approaching to those of HMDE, exhibiting a high hydrogen overvoltage in comparison with other solid electrodes. AgSAE has been most frequently utilized in three surface modifications: mercury meniscus modified (m-AgSAE), mercury film modified (MF-AgSAE) and polished (p-AgSAE) silver solid amalgam electrodes for determination of various inorganic, organic compounds and also for some analysis of peptides or DNA [5]. In this study the m-AgSAE has been used to investigate the electrochemical behavior of the herbicide metamitron by cyclic voltammetry, DC voltammetry and differential pulse voltammetry and to compare the results with those obtained with HMDE. Furthermore, the optimum parameters of DPV were found for metamitron determination using model solution and proposed method was successfully applied for metamitron determination in real samples of pesticide preparations.	voltammetry; determination; metamitron; silver solid amalgam electrode