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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F12%3A39895328%21RIV13-MSM-25310___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Two new procedures were elaborated to determine copper (II) using voltammetry at the antimony film carbon paste electrodes (SbF-CPEs). In the first one, copper (II) was accumulated from a medium of 0.01 M hydrochloric acid at -1.2 V for 120s and, after a equilibration step of 15s, followed with an anodic stripping using 25 Hz frequency, 25 mV amplitude and 4 mV potential step. Calibration dependence was linear up to 120 ppb Cu, detection limit (3 sigma) of 1.45 ppb was calculated. In the second procedure, Pyrocatechol Violet was used as a chelating ligand. In the same medium, potential of -0.5 V and time of 60s were used for accumulation, then followed with equilibration and anodic stripping steps as mentioned for the first procedure. In this case, calibration was linear up to 100 ppb Cu with detection limit of 1.10 ppb, a slightly lower value even if half time of accumulation was used. Both procedures were verified in analysis of a real river water sample giving results comparable with those obtained by ICP-MS method. Two new procedures were elaborated to determine copper (II) using voltammetry at the antimony film carbon paste electrodes (SbF-CPEs). In the first one, copper (II) was accumulated from a medium of 0.01 M hydrochloric acid at -1.2 V for 120s and, after a equilibration step of 15s, followed with an anodic stripping using 25 Hz frequency, 25 mV amplitude and 4 mV potential step. Calibration dependence was linear up to 120 ppb Cu, detection limit (3 sigma) of 1.45 ppb was calculated. In the second procedure, Pyrocatechol Violet was used as a chelating ligand. In the same medium, potential of -0.5 V and time of 60s were used for accumulation, then followed with equilibration and anodic stripping steps as mentioned for the first procedure. In this case, calibration was linear up to 100 ppb Cu with detection limit of 1.10 ppb, a slightly lower value even if half time of accumulation was used. Both procedures were verified in analysis of a real river water sample giving results comparable with those obtained by ICP-MS method.
dcterms:title
New Procedures for Voltammetric Determination of Copper (II) Using Antimony Film-Coated Carbon Paste Electrodes New Procedures for Voltammetric Determination of Copper (II) Using Antimony Film-Coated Carbon Paste Electrodes
skos:prefLabel
New Procedures for Voltammetric Determination of Copper (II) Using Antimony Film-Coated Carbon Paste Electrodes New Procedures for Voltammetric Determination of Copper (II) Using Antimony Film-Coated Carbon Paste Electrodes
skos:notation
RIV/00216275:25310/12:39895328!RIV13-MSM-25310___
n11:predkladatel
n12:orjk%3A25310
n3:aktivita
n15:I
n3:aktivity
I
n3:cisloPeriodika
July
n3:dodaniDat
n17:2013
n3:domaciTvurceVysledku
n8:6143083 Ashrafi, Amirmansoor
n3:druhVysledku
n14:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
154084
n3:idVysledku
RIV/00216275:25310/12:39895328
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Copper determination; stripping voltammetry; carbon paste electrode; antimony film electrode
n3:klicoveSlovo
n4:carbon%20paste%20electrode n4:stripping%20voltammetry n4:Copper%20determination n4:antimony%20film%20electrode
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[E3D14D529A4E]
n3:nazevZdroje
Electrochimica Acta
n3:obor
n10:CG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n17:2012
n3:svazekPeriodika
73
n3:tvurceVysledku
Ashrafi, Amirmansoor Vytřas, Karel
n3:wos
000305261100017
s:issn
0013-4686
s:numberOfPages
6
n5:doi
10.1016/j.electacta.2011.12.042
n19:organizacniJednotka
25310