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| Description
| - Tato práce popisuje studium eletroredukce kyseliny 4-amino-3,5,6-trichloropikolinové (picloram) na rtuťové eletrodě. Při koncentracích vyšších než 2 × 10-4 M byly pozorovány dvě oblasti píků, jeden v rozmezí potenciálů –0.6 až –0.8V (systém I), druhý v rozmezí 0 až –0.4 V (systém II). V závislosti na experimentálních podmínkách byla existence píků v oblastech výšeuvedených potenciálů vysvětlena slabou adsorpcí reaktantu a silnou adsorpcí produktu na povrchu elektrody. Nad pH = 3 tyto píky nebyly pozorovány, co může být důsledkem acido-bázické rovnováhy odpovídající disociaci karboxylové skupiny. Hodnota šířky píku v poloviční výšce, separace mezi adsorpční předvlnou a difuzní vlnou, poměr výšek těchto vln a další experimentální práce v nevodném prostředí ukazují, že látka poskytující vlnu II je nenabitý picloram, kdežto vlnu I poskytuje forma picloramu protonizovaná na dusíku pyridinu. (cs)
- This paper presents voltammetric studies on the electroreduction of 4-amino-3, 5, 6-trichloropicolinic acid (picloram) on mercury electrodes. At concentrations higher than 2x10(-4) M, two prepeak systems were found in the potential ranges -0.6 to -0.8 V (system I, close to the main reductions peak) and 0 to -0.4 V (system II). Under these conditions, these prepeak systems can be attributed to the weak adsorption of reactant and the strong adsorption of the product at the electrode surface. Above pH 3, prepeak systems I and II were not found in the voltammograms, and that could be related to the acid-basic equilibrium corresponding to the disssociation of the carboxylic group. The values of the adsorption half peak width, the separation between the adsorption prepeak and the diffusion peak, the ratio between the intensities of these peaks and the experiments performed in aprotic media, showed that the species responsible for the appearance of the peak system II must be ...
- This paper presents voltammetric studies on the electroreduction of 4-amino-3, 5, 6-trichloropicolinic acid (picloram) on mercury electrodes. At concentrations higher than 2x10(-4) M, two prepeak systems were found in the potential ranges -0.6 to -0.8 V (system I, close to the main reductions peak) and 0 to -0.4 V (system II). Under these conditions, these prepeak systems can be attributed to the weak adsorption of reactant and the strong adsorption of the product at the electrode surface. Above pH 3, prepeak systems I and II were not found in the voltammograms, and that could be related to the acid-basic equilibrium corresponding to the disssociation of the carboxylic group. The values of the adsorption half peak width, the separation between the adsorption prepeak and the diffusion peak, the ratio between the intensities of these peaks and the experiments performed in aprotic media, showed that the species responsible for the appearance of the peak system II must be ... (en)
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| Title
| - A voltammetric study of the adsorption-desorption processes in the reduction of the herbicide picloram on mercury electrodes
- A voltammetric study of the adsorption-desorption processes in the reduction of the herbicide picloram on mercury electrodes (en)
- Voltametrické studium procesů adsorpce-desorpce v průběhu redukce herbicidu Picloram na rtuťové elektrode (cs)
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| skos:prefLabel
| - A voltammetric study of the adsorption-desorption processes in the reduction of the herbicide picloram on mercury electrodes
- A voltammetric study of the adsorption-desorption processes in the reduction of the herbicide picloram on mercury electrodes (en)
- Voltametrické studium procesů adsorpce-desorpce v průběhu redukce herbicidu Picloram na rtuťové elektrode (cs)
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| skos:notation
| - RIV/61388955:_____/05:00030682!RIV06-AV0-61388955
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/05:00030682
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - s-triazine herbicides; polarography; propazine (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Journal of the Electrochemical Society
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Hromadová, Magdaléna
- Pospíšil, Lubomír
- Corredor, M. C.
- Rodriguez Mellado, J. M.
- Ruiz Montoya, M.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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