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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F14%3A39898227%21RIV15-MSM-25310___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
In this manuscript, a carbon paste electrode (CPE) from traditional components has been used for studying of electrochemical oxidation of nicotine and its feasibility to be performed at unmodified and otherwise untreated carbon paste in an effort to propose a simple voltammetric method for the determination of nicotine in samples of refilling liquids for electronic cigarettes. As found out, irreversible oxidation of nicotine at CPE had occurred at +0.95 V vs. Ag/AgCl as a diffusion-controlled process, when suitable pH for this redox transformation was either a neutral supporting medium (phosphate buffer, pH 7.5) or mild alkaline solution (of Britton-Robinson buffer, pH 11). After having chosen the SWV mode and optimizing the key instrumental and electroanalytical parameters, the oxidation response of the substance of interest has been fairly proportional to concentration in the range of 50-500 mýmol?L-1 in phosphate buffer or even 50-1000 mýmol?L-1 in Britton-Robinson buffer. And if the reproducibility could substantially be improved by incorporating an effective conditioning step, the method could be applied for the determination of nicotine in real samples of refilling liquids for electronic cigarette with satisfactory results corresponding well to the values declared by manufacturer. In this manuscript, a carbon paste electrode (CPE) from traditional components has been used for studying of electrochemical oxidation of nicotine and its feasibility to be performed at unmodified and otherwise untreated carbon paste in an effort to propose a simple voltammetric method for the determination of nicotine in samples of refilling liquids for electronic cigarettes. As found out, irreversible oxidation of nicotine at CPE had occurred at +0.95 V vs. Ag/AgCl as a diffusion-controlled process, when suitable pH for this redox transformation was either a neutral supporting medium (phosphate buffer, pH 7.5) or mild alkaline solution (of Britton-Robinson buffer, pH 11). After having chosen the SWV mode and optimizing the key instrumental and electroanalytical parameters, the oxidation response of the substance of interest has been fairly proportional to concentration in the range of 50-500 mýmol?L-1 in phosphate buffer or even 50-1000 mýmol?L-1 in Britton-Robinson buffer. And if the reproducibility could substantially be improved by incorporating an effective conditioning step, the method could be applied for the determination of nicotine in real samples of refilling liquids for electronic cigarette with satisfactory results corresponding well to the values declared by manufacturer.
dcterms:title
Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes
skos:prefLabel
Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes
skos:notation
RIV/00216275:25310/14:39898227!RIV15-MSM-25310___
n5:aktivita
n6:P n6:I
n5:aktivity
I, P(EE2.3.30.0021)
n5:cisloPeriodika
12
n5:dodaniDat
n14:2015
n5:domaciTvurceVysledku
n11:9805524 n11:8608237
n5:druhVysledku
n9:J
n5:duvernostUdaju
n18:S
n5:entitaPredkladatele
n13:predkladatel
n5:idSjednocenehoVysledku
14094
n5:idVysledku
RIV/00216275:25310/14:39898227
n5:jazykVysledku
n15:eng
n5:klicovaSlova
real samples; determination; nicotine; voltammetric oxidation; Carbon paste electrode
n5:klicoveSlovo
n10:voltammetric%20oxidation n10:determination n10:real%20samples n10:Carbon%20paste%20electrode n10:nicotine
n5:kodStatuVydavatele
DE - Spolková republika Německo
n5:kontrolniKodProRIV
[F087F53E53F6]
n5:nazevZdroje
Electroanalysis
n5:obor
n19:CG
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
2
n5:projekt
n12:EE2.3.30.0021
n5:rokUplatneniVysledku
n14:2014
n5:svazekPeriodika
26
n5:tvurceVysledku
Stočes, Matěj Švancara, Ivan
n5:wos
000345978300014
s:issn
1040-0397
s:numberOfPages
9
n17:doi
10.1002/elan.201400403
n4:organizacniJednotka
25310