Digitální knihovnaUPCE
 

Determination of vitamin K1 using square wave adsorptive stripping voltammetry at solid glassy carbon electrode

ČlánekOmezený přístuppeer-reviewedpublished

Abstrakt

A new electroanalytical method for determination of phylloquinone (vitamin K1) occuring in food samples of plant origin has been developed. Presented method is based on adsorptive accumulation of this biologically active compound onto the surface of solid glassy carbon electrode with subsequent electrochemical detection using square wave adsorptive stripping voltammetry in 0.1 M HCl. Two linear ranges of phylloquinone determination were 1.0 x 10(-8)-1.0 x 10(-6) mol L-1 and 5.0 x 10(-6)-1.0 x 10(-4) mol L-1 with the detection limits of 8.9 x 10(-9) and 5.1 x 10(-8) mol L-1, respectively. Obtained results have shown that square wave voltammetry with adsorptive accumulation step is very sensitive method for the determination of vitamin K-1, being comparable to standard high performance liquid chromatography method for food analysis (EN 14148:2003).

Rozsah stran

p. 10-15

ISSN

1572-6657

Trvalý odkaz na tento záznam

Projekt

Zdrojový dokument

Journal of Electroanalytical Chemistry, volume 821, issue: Julz

Vydavatelská verze

http://ttps://reader.elsevier.com/reader/sd/pii/S1572665718301048?token=779966B2B8A0C1475EF486807663ABFBB1E720A8FE7E8FA0FFA736303E2A1CF24230960374AA8DAC80AF2E7EFDC5DC18

Přístup k e-verzi

Pouze v rámci UPa

Název akce

ISBN

Studijní obor

Studijní program

Signatura tištěné verze

Umístění tištěné verze

Přístup k tištěné verzi

Klíčová slova

Glassy carbon electrode, square wave voltammetry, vitamin K1, phylloquinone, food analysis, Elektroda ze skelného uhlíku, square wave voltametrie, vitamín K1, filochinon, analýza potravin

Endorsement

Review

item.page.supplemented

item.page.referenced