Login for students

Login for employees

Publication detail

Sensitive voltammetric method for determination of herbicide metribuzin using silver solid amalgam electrode
Authors: Janíková Lenka | Šelešovská Renáta | Rogozinská Michaela | Tomášková Markéta | Chýlková Jaromíra
Year: 2016
Type of publication: článek v odborném periodiku
Name of source: Monatshefte fur Chemie
Page from-to: 219-229
Titles:
Language Name Abstract Keywords
cze Citlivá voltametrická metoda stanovení herbicidu metribuzinu s využitím stříbrné pevné amalgámové elektrody Bylo studováno voltametrické chování herbicidu metribuzinu s využitím stříbrné pevné amalgámové elektrody a byla vyvinuta metoda stanovení této látky. Ta byla splikována při analýze přírodních vod a pesticidního přípravku. Elektrochemie; voltametrie; herbicidy; metribuzin; stříbrná pevná amalgámová elektroda; visíc rtuťová kapková elektroda
eng Sensitive voltammetric method for determination of herbicide metribuzin using silver solid amalgam electrode New sensitive voltammetric method for determination of triazinone herbicide metribuzin (MTZ) was developed employing polished and mercury meniscus-modified silver solid amalgam electrode (p-, m-AgSAE). MTZ yielded two reduction signals on both used working electrodes in acidic and slightly acidic media and the positively situated peak [at about -650 mV vs. Ag|AgCl|KCl (sat.)] was found suitable for further analytical measurements. The highest responses were recorded in Britton-Robinson buffer of pH 2 (p-AgSAE) or 3 (m-AgSAE). Various voltammetric techniques like cyclic, linear sweep, and differential pulse voltammetry were used for examination of the voltammetric behavior of MTZ. Parameters of differential pulse voltammetry were optimized and low detection limits were reached (LODm-AgSAE = 6.0 x 10(-8) mol dm(-3) and LODp-AgSAE = 7.5 x 10(-8) mol dm(-3)). Moreover, excellent repeatability of determination and measurements as well was confirmed by low values of relative standard deviations of five repeated determinations [RSD (5) a parts per thousand currency sign 6.0 %] and of 11 repeated measurements [RSD (11) a parts per thousand currency sign 4.5 %], respectively. Finally, practical applicability of newly proposed methods was verified by the analysis of spiked tap and river water and by determination of MTZ in pesticide preparation with excellent results. All the obtained results were compared with those gained for classic mercury electrode. Electrochemistry; Voltammetry; Herbicide; Metribuzin; Silver solid amalgam electrode; Hanging mercury drop electrode

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives