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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F14%3A39898763%21RIV15-MSM-25310___
rdf:type
skos:Concept n19:Vysledek
dcterms:description
Ascorbic acid, known as vitamin C, interferes significantly in determinations of numerous clinically important organic compounds (glucose, dopamine, cholesterol, etc.) where enzymatic biosensors based on oxidoreductases are used. Sensitivity of ascorbic acid to increased temperature and light could be useful for its elimination from samples. Ascorbic acid is an electroactive substance which can simply be oxidized at carbon paste electrode to dehydro-L-ascorbic acid in acidic or neutral media. Concerning cyclic voltammetry in this study, following parameters were adjusted: potential range, -0.4 to +1.0 V vs. Ag|AgCl|3.0 M KCl; scan rate, 50 mV s?1; potential step, 5 mV; number of scans, n=5-10. All experiments were performed with 1.0x10-3 M ascorbic acid solutions in 0.1 M phosphate buffer (pH 7.0; 25 +- 1 °C). Ascorbic acid, known as vitamin C, interferes significantly in determinations of numerous clinically important organic compounds (glucose, dopamine, cholesterol, etc.) where enzymatic biosensors based on oxidoreductases are used. Sensitivity of ascorbic acid to increased temperature and light could be useful for its elimination from samples. Ascorbic acid is an electroactive substance which can simply be oxidized at carbon paste electrode to dehydro-L-ascorbic acid in acidic or neutral media. Concerning cyclic voltammetry in this study, following parameters were adjusted: potential range, -0.4 to +1.0 V vs. Ag|AgCl|3.0 M KCl; scan rate, 50 mV s?1; potential step, 5 mV; number of scans, n=5-10. All experiments were performed with 1.0x10-3 M ascorbic acid solutions in 0.1 M phosphate buffer (pH 7.0; 25 +- 1 °C).
dcterms:title
Heat and light sensitivity of ascorbic acid studied at carbon paste electrode Heat and light sensitivity of ascorbic acid studied at carbon paste electrode
skos:prefLabel
Heat and light sensitivity of ascorbic acid studied at carbon paste electrode Heat and light sensitivity of ascorbic acid studied at carbon paste electrode
skos:notation
RIV/00216275:25310/14:39898763!RIV15-MSM-25310___
n3:aktivita
n11:S
n3:aktivity
S
n3:dodaniDat
n12:2015
n3:domaciTvurceVysledku
n14:5486521 n14:6143083 n14:8488568
n3:druhVysledku
n20:D
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
18861
n3:idVysledku
RIV/00216275:25310/14:39898763
n3:jazykVysledku
n6:eng
n3:klicovaSlova
cyclic voltammetry; ascorbic acid; carbon paste electrode
n3:klicoveSlovo
n10:carbon%20paste%20electrode n10:cyclic%20voltammetry n10:ascorbic%20acid
n3:kontrolniKodProRIV
[79F7C60D24FA]
n3:mistoKonaniAkce
Ovčárna pod Pradědem
n3:mistoVydani
Pardubice
n3:nazevZdroje
Monitorování cizorodých látek v životním prostředí XVI., sborník příspěvků ze semináře
n3:obor
n4:CG
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n12:2014
n3:tvurceVysledku
Vytřas, Karel Sýs, Milan Rosecká, Kamila
n3:typAkce
n7:CST
n3:zahajeniAkce
2014-04-09+02:00
s:numberOfPages
8
n17:hasPublisher
Univerzita Pardubice
n5:isbn
978-80-7395-821-3
n18:organizacniJednotka
25310