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Statements

Subject Item
n2:RIV%2F00216305%3A26620%2F13%3APU112453%21RIV15-MSM-26620___
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://www.mdpi.com/1424-8220/13/11/14417/htm
dcterms:description
In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time and applied potential) were studied. We showed that the increasing concentration of the complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) led to a decrease in the electrochemical signal and a significant shift of the potential to more positive values. The most likely explanation of this result is that zinc is strongly bound in the complex and its distribution on the electrode is very limited. Changing the pH from 3.5 to 5.5 resulted in a significant intensification of the Zn(II) reduction signal. The complexes were also characterized by UV/VIS spectrophotometry, chromatography, and ESI-QTOF mass spectrometry. In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time and applied potential) were studied. We showed that the increasing concentration of the complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) led to a decrease in the electrochemical signal and a significant shift of the potential to more positive values. The most likely explanation of this result is that zinc is strongly bound in the complex and its distribution on the electrode is very limited. Changing the pH from 3.5 to 5.5 resulted in a significant intensification of the Zn(II) reduction signal. The complexes were also characterized by UV/VIS spectrophotometry, chromatography, and ESI-QTOF mass spectrometry.
dcterms:title
Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry
skos:prefLabel
Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry
skos:notation
RIV/00216305:26620/13:PU112453!RIV15-MSM-26620___
n4:aktivita
n10:P n10:Z
n4:aktivity
P(ED1.1.00/02.0068), Z(MSM6215648902)
n4:cisloPeriodika
11
n4:dodaniDat
n19:2015
n4:domaciTvurceVysledku
n6:3649857 n6:4489705 n6:2307049 n6:9584366 n6:5314801 n6:6359914 n6:5238439 n6:4995775 n6:4733029 n6:1774395 n6:8740658
n4:druhVysledku
n5:J
n4:duvernostUdaju
n20:S
n4:entitaPredkladatele
n9:predkladatel
n4:idSjednocenehoVysledku
63043
n4:idVysledku
RIV/00216305:26620/13:PU112453
n4:jazykVysledku
n15:eng
n4:klicovaSlova
electrochemical analysis, differential pulse voltammetry, screen printed electrode, spectrometry, Zn(II)
n4:klicoveSlovo
n8:electrochemical%20analysis n8:Zn%28II%29 n8:differential%20pulse%20voltammetry n8:spectrometry n8:screen%20printed%20electrode
n4:kodStatuVydavatele
CH - Švýcarská konfederace
n4:kontrolniKodProRIV
[AB1CAF7725C8]
n4:nazevZdroje
SENSORS
n4:obor
n21:CG
n4:pocetDomacichTvurcuVysledku
11
n4:pocetTvurcuVysledku
13
n4:projekt
n11:ED1.1.00%2F02.0068
n4:rokUplatneniVysledku
n19:2013
n4:svazekPeriodika
13
n4:tvurceVysledku
Konečná, Marie Kudr, Jiří Prášek, Jan Ruttkay-Nedecký, Branislav Hubálek, Jaromír Kizek, René Adam, Vojtěch Nejdl, Lukáš Kopel, Pavel Zítka, Ondřej Kynický, Jindřich Kremplová, Monika Cernei, Natalia Vladimirovna
n4:wos
000330321100009
n4:zamer
n13:MSM6215648902
s:issn
1424-8220
s:numberOfPages
21
n14:doi
10.3390/s131114417
n7:organizacniJednotka
26620