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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F01%3A00001339%21RIV%2F2002%2FMSM%2F153102%2FN
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The electrochemical behavior of the herbicide metribuzin (4 amino-6-teat-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5 one) at mercury electrodes was studied in aqueous solutions by direct current (DC) and tast polarography, differential pulse (DPV) andcyclic voltammetry (CV), and controlled-potential coulometry. The electrolysis products were separated and identified by chromatographic techniques combined with mass spectrometric detection. The reduction process in acid media includes two irreversible steps. In the first four-electron step the N-NH2 and the 1,6-azomethine bonds are reduced. The second step leads to the formation of 5-tert-butyl-2,3,4,5 tetrahydroimidazol-4-one at the mercury-pool electrode. The first reduction step combined with adso rptive accumulation of the herbicide molecule at the mercury electrode surface was used for its determination by differential pulse adsorptive stripping voltammetry (DPAdSV). Calibration curves were linear in the range 1-30 mug L-1 with a detection limit The electrochemical behavior of the herbicide metribuzin (4 amino-6-teat-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5 one) at mercury electrodes was studied in aqueous solutions by direct current (DC) and tast polarography, differential pulse (DPV) andcyclic voltammetry (CV), and controlled-potential coulometry. The electrolysis products were separated and identified by chromatographic techniques combined with mass spectrometric detection. The reduction process in acid media includes two irreversible steps. In the first four-electron step the N-NH2 and the 1,6-azomethine bonds are reduced. The second step leads to the formation of 5-tert-butyl-2,3,4,5 tetrahydroimidazol-4-one at the mercury-pool electrode. The first reduction step combined with adso rptive accumulation of the herbicide molecule at the mercury electrode surface was used for its determination by differential pulse adsorptive stripping voltammetry (DPAdSV). Calibration curves were linear in the range 1-30 mug L-1 with a detection limit
dcterms:title
Electrochemical behavior and voltammetric determination of the herbicide metribuzin at mercury electrodes Electrochemical behavior and voltammetric determination of the herbicide metribuzin at mercury electrodes
skos:prefLabel
Electrochemical behavior and voltammetric determination of the herbicide metribuzin at mercury electrodes Electrochemical behavior and voltammetric determination of the herbicide metribuzin at mercury electrodes
skos:notation
RIV/61989592:15310/01:00001339!RIV/2002/MSM/153102/N
n3:strany
963-969
n3:aktivita
n12:Z
n3:aktivity
Z(MSM 153100013)
n3:cisloPeriodika
7
n3:dodaniDat
n14:2002
n3:domaciTvurceVysledku
n6:1077074 n6:2670003 n6:7092970 n6:4316851 n6:9476644
n3:druhVysledku
n18:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
679085
n3:idVysledku
RIV/61989592:15310/01:00001339
n3:jazykVysledku
n16:eng
n3:klicovaSlova
SOLID-PHASE EXTRACTION; METAMITRON; REDUCTION; CHROMATOGRAPHY; METABOLITES; ATRAZINE; SOIL
n3:klicoveSlovo
n5:ATRAZINE n5:METAMITRON n5:SOLID-PHASE%20EXTRACTION n5:REDUCTION n5:METABOLITES n5:CHROMATOGRAPHY n5:SOIL
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[2ADC8530FBE4]
n3:nazevZdroje
Fresenius Journal of Analytical Chemistry
n3:obor
n11:CB
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:rokUplatneniVysledku
n14:2001
n3:svazekPeriodika
370
n3:tvurceVysledku
Skopalová, Jana Kotouček, Milan Lemr, Karel Barták, Petr Čáp, Lubomír
n3:zamer
n8:MSM%20153100013
s:issn
0937-0633
s:numberOfPages
7
n9:organizacniJednotka
15310