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Titolo:
Voltammetric determination of coenzyme Q(10) at a solid glassy carbon electrode
Autore:
Litescu, SC; David, IG; Radu, GL; Aboul-Enein, HY;
Indirizzi:
Natl Inst Biol Sci, Dept Analyt Biochem, Bucharest 6, Romania Natl Inst Biol Sci Bucharest Romania 6 lyt Biochem, Bucharest 6, Romania Univ Bucharest, Fac Chem, Dept Analyt Chem, Bucharest 5, Romania Univ Bucharest Bucharest Romania 5 ept Analyt Chem, Bucharest 5, Romania King Faisal Specialist Hosp & Res Ctr, Pharmaceut Anal Lab, Biol & Med ResDept MBC 03, Riyadh 11211, Saudi Arabia King Faisal Specialist Hosp & Res Ctr Riyadh Saudi Arabia 11211 i Arabia
Titolo Testata:
INSTRUMENTATION SCIENCE & TECHNOLOGY
fascicolo: 2, volume: 29, anno: 2001,
pagine: 109 - 116
SICI:
1073-9149(2001)29:2<109:VDOCQA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIQUID-CHROMATOGRAPHIC METHOD; GOLD ELECTRODE; HUMAN PLASMA; UBIQUINONE; DISEASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Radu, GL Natl Inst Biol Sci, Dept Analyt Biochem, 296 Splaiul Indepdentei 7748,POB 17-16, Bucharest 6, Romania Natl Inst Biol Sci 296 Splaiul Indepdentei 7748,POB 17-16 Bucharest Romania 6
Citazione:
S.C. Litescu et al., "Voltammetric determination of coenzyme Q(10) at a solid glassy carbon electrode", INSTR SCI T, 29(2), 2001, pp. 109-116

Abstract

This paper reports a simple, sensitive, and accurate voltammetric method for the coenzyme Q(10) electroanalytical determination on a glassy carbon electrode (GCE) from commercially available capsules, compared with a UV-VIS spectrophotometric method. Cyclic (CV), linear sweep (LSV), and square-wave (SWV) voltammetry on GCE was employed to explore the coenzyme Q(10) behaviour, using as supporting electrolyte, 0.12 M H2SO4 (in methanol) in hexane/methanol (1:2 vol.) mixture. The voltammograms showed the characteristic reduction peaks at potentialvalues in the range of 0.190- 0.300 V vs. Ag/AgCl, depending on the technique that was used. A linear dependence of the reduction peak height on the analyte concentration was obtained using LSV and SWV techniques in the domains 5 x 10(-6) - 7 x 10(-4) mol L-1,and 5 x 10(-7) - 7 x 10(-4) mol L-1 coenzyme Q(10) concentration. The detection limit was 10(-7) mol L-1 for SWV.

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Documento generato il 28/01/20 alle ore 21:05:25