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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F14%3A39898285%21RIV15-MSM-25310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Multiwalled carbon nanotube modified edge plane pyrolytic graphite electrode (MWCNT/EPPGE) was developed and implemented for the determination of antiretroviral drug Abacavir using differential pulse adsorptive stripping voltammetry (DP AdSV). Cyclic voltammogram showed two oxidation peaks located at +0.91 V and +1.10 V on (MWCNT/EPPGE). Dependency of peak potential and peak current on pH was investigated as details. The oxidation potentials affected by the pH indicating protons are involved in the electrochemical oxidation of Abacavir. Mass transport to the electrode surface was found as a combination of diffusion and adsorption which was concluded by studying the potential scan rate dependency of both peak currents. The oxidation mechanism was proposed using the obtained data and discussed. A large enhancement in both of the peak currents was observed with applying an accumulation step presenting the effect of adsorption. Peak currents showed a linear relation upon the Abacavir concentration within a range of 1 x 10(-7)-2 x 10(-5) M with (r = 0.999) for both peak responses. The method was fully validated related with selectivity, sensitivity, precision and accuracy studies. Abacavir was also determined with the proposed method in its pharmaceutical dosage forms and human serum samples. No interferences from the excipients of the dosage form or endogenous substances from biological material were found. Multiwalled carbon nanotube modified edge plane pyrolytic graphite electrode (MWCNT/EPPGE) was developed and implemented for the determination of antiretroviral drug Abacavir using differential pulse adsorptive stripping voltammetry (DP AdSV). Cyclic voltammogram showed two oxidation peaks located at +0.91 V and +1.10 V on (MWCNT/EPPGE). Dependency of peak potential and peak current on pH was investigated as details. The oxidation potentials affected by the pH indicating protons are involved in the electrochemical oxidation of Abacavir. Mass transport to the electrode surface was found as a combination of diffusion and adsorption which was concluded by studying the potential scan rate dependency of both peak currents. The oxidation mechanism was proposed using the obtained data and discussed. A large enhancement in both of the peak currents was observed with applying an accumulation step presenting the effect of adsorption. Peak currents showed a linear relation upon the Abacavir concentration within a range of 1 x 10(-7)-2 x 10(-5) M with (r = 0.999) for both peak responses. The method was fully validated related with selectivity, sensitivity, precision and accuracy studies. Abacavir was also determined with the proposed method in its pharmaceutical dosage forms and human serum samples. No interferences from the excipients of the dosage form or endogenous substances from biological material were found.
dcterms:title
Electrochemical mechanism and sensitive assay of antiretroviral drug Abacavir in biological sample using multiwalled carbon nanotube modified pyrolytic graphite electrode Electrochemical mechanism and sensitive assay of antiretroviral drug Abacavir in biological sample using multiwalled carbon nanotube modified pyrolytic graphite electrode
skos:prefLabel
Electrochemical mechanism and sensitive assay of antiretroviral drug Abacavir in biological sample using multiwalled carbon nanotube modified pyrolytic graphite electrode Electrochemical mechanism and sensitive assay of antiretroviral drug Abacavir in biological sample using multiwalled carbon nanotube modified pyrolytic graphite electrode
skos:notation
RIV/00216275:25310/14:39898285!RIV15-MSM-25310___
n3:aktivita
n18:I
n3:aktivity
I
n3:cisloPeriodika
January
n3:dodaniDat
n7:2015
n3:domaciTvurceVysledku
n10:6143083 Ashrafi, Amirmansoor
n3:druhVysledku
n5:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
14112
n3:idVysledku
RIV/00216275:25310/14:39898285
n3:jazykVysledku
n15:eng
n3:klicovaSlova
Adsorptive stripping voltammetry; Determination; Edge plane pyrolytic graphite electrode; Multiwalled carbon nanotube; Oxidation mechanism; Abacavir
n3:klicoveSlovo
n6:Abacavir n6:Determination n6:Adsorptive%20stripping%20voltammetry n6:Oxidation%20mechanism n6:Multiwalled%20carbon%20nanotube n6:Edge%20plane%20pyrolytic%20graphite%20electrode
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[DC72D811812F]
n3:nazevZdroje
Journal of Electroanalytical Chemistry
n3:obor
n17:CG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n7:2014
n3:svazekPeriodika
712
n3:tvurceVysledku
Ashrafi, Amirmansoor Vytřas, Karel Uslu, Bengi Kurbanoglu, Sevinc Ozkan, Sibel A.
n3:wos
000330749300025
s:issn
1572-6657
s:numberOfPages
7
n16:doi
10.1016/j.jelechem.2013.11.012
n14:organizacniJednotka
25310