Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion (R)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914606" target="_blank" >RIV/00216275:25310/19:39914606 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800646" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800646</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/elan.201800646" target="_blank" >10.1002/elan.201800646</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion (R)

Popis výsledku v původním jazyce

A new voltammetric method for simultaneous determination of caffeine and pyridoxine present in different types of commercial energy drinks has been developed. This electroanalytical method is based on anodic oxidation of these biologically active nitrogen-containing heterocycles at glassy carbon electrode covered with thin layer of sulfonated fluoropolymer Nafion® using differential pulse voltammetry in 0.1 M Britton-Robinson buffer of pH 4.5 at potential step 5 mV, potential amplitude 70 mV, and scan rate 50 mV/s. Linear ranges for caffeine and pyridoxine determination were 63.1-600 µM and 7.5-200 µM with the detection limits of 18.9 and 2.2 µM, respectively. It was validated using high-performance liquid chromatography with spectrophotometric detection. Obtained results have shown that voltammetric approach is very simple and low-cost analytical method which can be used for routine determination of caffeine and pyridoxine in energy drinks.

Název v anglickém jazyce

Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion (R)

Popis výsledku anglicky

A new voltammetric method for simultaneous determination of caffeine and pyridoxine present in different types of commercial energy drinks has been developed. This electroanalytical method is based on anodic oxidation of these biologically active nitrogen-containing heterocycles at glassy carbon electrode covered with thin layer of sulfonated fluoropolymer Nafion® using differential pulse voltammetry in 0.1 M Britton-Robinson buffer of pH 4.5 at potential step 5 mV, potential amplitude 70 mV, and scan rate 50 mV/s. Linear ranges for caffeine and pyridoxine determination were 63.1-600 µM and 7.5-200 µM with the detection limits of 18.9 and 2.2 µM, respectively. It was validated using high-performance liquid chromatography with spectrophotometric detection. Obtained results have shown that voltammetric approach is very simple and low-cost analytical method which can be used for routine determination of caffeine and pyridoxine in energy drinks.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electroanalysis

ISSN

1040-0397

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

1511-1516

Kód UT WoS článku

000479081100012

EID výsledku v databázi Scopus

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