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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F14%3A10218642%21RIV15-MSM-11310___
rdf:type
skos:Concept n17:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1002/elan.201400001
dcterms:description
This work reports the application of screen-printed electrodes bulk-modified with bismuth precursors to the voltammetric determination of 2-nitrophenol (2-NP), 4-nitrophenol (4-NP) and 2,4-dinitrophenol (2,4-DNP) in water samples. A bismuth film was formed at the electrode surface via in situ reduction of the precursor compound contained in the electrode matrix by cathodic polarization at -1.20V. The formation of bismuth layer at the precursor-modified electrodes was assessed by cyclic voltammetric (CV) at different pH values and by optical techniques. The target nitrophenols were voltammetrically determined by recording their reduction peaks in the differential pulse (DP) mode. The composition and content of the precursor compounds in the printed ink and the effect of the pH of the supporting electrolyte on the DP reduction currents of the 3 target nitrophenols were studied. The limits of quantification (LOQs) in three water matrices (distilled water, tap water and surface water) were in the range 1.1-2.2 mu molL(.)(-1) Using a simple solid-phase extraction (SPE) procedure with Lichrolut EN cartridges and elution with methanol, a preconcentration factor of 100 was achieved; the LOQs were 0.021, 0.027 and 0.025 mu molL(-1) for 2-NP, 4-NP and 2,4-DNP, respectively. The recoveries of samples spiked with the 3 target nitrophenols at two concentration levels (0.04 and 0.1 mu molL(-1)) were always >87%. This work reports the application of screen-printed electrodes bulk-modified with bismuth precursors to the voltammetric determination of 2-nitrophenol (2-NP), 4-nitrophenol (4-NP) and 2,4-dinitrophenol (2,4-DNP) in water samples. A bismuth film was formed at the electrode surface via in situ reduction of the precursor compound contained in the electrode matrix by cathodic polarization at -1.20V. The formation of bismuth layer at the precursor-modified electrodes was assessed by cyclic voltammetric (CV) at different pH values and by optical techniques. The target nitrophenols were voltammetrically determined by recording their reduction peaks in the differential pulse (DP) mode. The composition and content of the precursor compounds in the printed ink and the effect of the pH of the supporting electrolyte on the DP reduction currents of the 3 target nitrophenols were studied. The limits of quantification (LOQs) in three water matrices (distilled water, tap water and surface water) were in the range 1.1-2.2 mu molL(.)(-1) Using a simple solid-phase extraction (SPE) procedure with Lichrolut EN cartridges and elution with methanol, a preconcentration factor of 100 was achieved; the LOQs were 0.021, 0.027 and 0.025 mu molL(-1) for 2-NP, 4-NP and 2,4-DNP, respectively. The recoveries of samples spiked with the 3 target nitrophenols at two concentration levels (0.04 and 0.1 mu molL(-1)) were always >87%.
dcterms:title
Screen-Printed Disposable Sensors Modified with Bismuth Precursors for Rapid Voltammetric Determination of 3 Ecotoxic Nitrophenols Screen-Printed Disposable Sensors Modified with Bismuth Precursors for Rapid Voltammetric Determination of 3 Ecotoxic Nitrophenols
skos:prefLabel
Screen-Printed Disposable Sensors Modified with Bismuth Precursors for Rapid Voltammetric Determination of 3 Ecotoxic Nitrophenols Screen-Printed Disposable Sensors Modified with Bismuth Precursors for Rapid Voltammetric Determination of 3 Ecotoxic Nitrophenols
skos:notation
RIV/00216208:11310/14:10218642!RIV15-MSM-11310___
n3:aktivita
n16:P n16:I
n3:aktivity
I, P(7AMB12GR003), P(GBP206/12/G151)
n3:cisloPeriodika
4
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n19:4454472
n3:druhVysledku
n15:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
43954
n3:idVysledku
RIV/00216208:11310/14:10218642
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Screen-printing; Solid-phase extraction; Nitrophenols; Differential pulse voltammetry; Bismuth precursors
n3:klicoveSlovo
n6:Differential%20pulse%20voltammetry n6:Screen-printing n6:Bismuth%20precursors n6:Solid-phase%20extraction n6:Nitrophenols
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[243D72024590]
n3:nazevZdroje
Electroanalysis
n3:obor
n12:CG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n18:GBP206%2F12%2FG151 n18:7AMB12GR003
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
26
n3:tvurceVysledku
Economou, Anastasios Prodromidis, Mamas Lezi, Nikolitsa Barek, Jiří
n3:wos
000333749500013
s:issn
1040-0397
s:numberOfPages
10
n10:doi
10.1002/elan.201400001
n5:organizacniJednotka
11310