Sensitive voltammetric method for determination of herbicide metribuzin using silver solid amalgam electrode

Show simple item record Janíková, Lenka cze Šelešovská, Renáta cze Rogozinská, Michaela cze Tomášková, Markéta cze Chýlková, Jaromíra cze 2017-05-11T11:06:01Z 2017-05-11T11:06:01Z 2016 eng
dc.identifier.issn 0026-9247 eng
dc.description.abstract 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. eng
dc.format p. 219-229 eng
dc.language.iso eng eng
dc.relation.ispartof Monatshefte fur Chemie, volume 147, issue: 1 eng
dc.rights práce není přístupná eng
dc.subject Electrochemistry eng
dc.subject Voltammetry eng
dc.subject Herbicide eng
dc.subject Metribuzin eng
dc.subject Silver solid amalgam electrode eng
dc.subject Hanging mercury drop electrode eng
dc.subject Elektrochemie cze
dc.subject voltametrie cze
dc.subject herbicidy cze
dc.subject metribuzin cze
dc.subject stříbrná pevná amalgámová elektroda cze
dc.subject visíc rtuťová kapková elektroda cze
dc.title Sensitive voltammetric method for determination of herbicide metribuzin using silver solid amalgam electrode eng
dc.title.alternative Citlivá voltametrická metoda stanovení herbicidu metribuzinu s využitím stříbrné pevné amalgámové elektrody cze
dc.type article eng
dc.description.abstract-translated 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. cze
dc.peerreviewed yes eng
dc.publicationstatus published version eng
dc.identifier.doi 10.1007/s00706-015-1555-z
dc.identifier.wos 000367521400028
dc.identifier.scopus 2-s2.0-84952865222
dc.identifier.obd 39876959 eng

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