The application of carbon nanomaterials as electrode surface modifiers for the voltammetric sensing of nitroxinil - A comparative study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10409181" target="_blank" >RIV/00216208:11310/19:10409181 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=o443yZHXhp" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=o443yZHXhp</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jelechem.2019.113294" target="_blank" >10.1016/j.jelechem.2019.113294</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The application of carbon nanomaterials as electrode surface modifiers for the voltammetric sensing of nitroxinil - A comparative study

Popis výsledku v původním jazyce

This research paper reports on preparation of glassy carbon electrodes (GCE) modified with different carbon nanomaterials, such as single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphene functionalized using carboxylic groups (fG), and carbon nanohorns (CNHs). Topographical and electrochemical characterization of fabricated electrochemical sensors was performed by atomic force microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. Besides, their application for the determination of veterinary drug nitroxinil (Ntx) was verified. The voltammetric experiments were carried out using square wave voltammetry (SWV) with optimized parameters in Britton-Robinson buffer, pH 2.0, which was chosen as the most suitable medium for Ntx determination. The calibration curves for Nix were constructed employing SWCNTs-GCE, MWCNTs-GCE, fG-GCE, and CNHs-GCE, and limits of quantification (LOQ) and detection (LOD) were assessed. The results showed that all tested modified electrodes can be applied for electroanalysis of Nix, however, the highest sensitivity and satisfactory LOD of 0.16 mu mol L-1 and LOQ of 0.53 mu mol L-1 were obtained for MWCNTs-GCE. For that reason, MWCNTs-GCE was subsequently applied for quantitative analysis of Ntx in milk samples with results proving high repeatability and recoveries.

Název v anglickém jazyce

The application of carbon nanomaterials as electrode surface modifiers for the voltammetric sensing of nitroxinil - A comparative study

Popis výsledku anglicky

This research paper reports on preparation of glassy carbon electrodes (GCE) modified with different carbon nanomaterials, such as single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphene functionalized using carboxylic groups (fG), and carbon nanohorns (CNHs). Topographical and electrochemical characterization of fabricated electrochemical sensors was performed by atomic force microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. Besides, their application for the determination of veterinary drug nitroxinil (Ntx) was verified. The voltammetric experiments were carried out using square wave voltammetry (SWV) with optimized parameters in Britton-Robinson buffer, pH 2.0, which was chosen as the most suitable medium for Ntx determination. The calibration curves for Nix were constructed employing SWCNTs-GCE, MWCNTs-GCE, fG-GCE, and CNHs-GCE, and limits of quantification (LOQ) and detection (LOD) were assessed. The results showed that all tested modified electrodes can be applied for electroanalysis of Nix, however, the highest sensitivity and satisfactory LOD of 0.16 mu mol L-1 and LOQ of 0.53 mu mol L-1 were obtained for MWCNTs-GCE. For that reason, MWCNTs-GCE was subsequently applied for quantitative analysis of Ntx in milk samples with results proving high repeatability and recoveries.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

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

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

—

Svazek periodika

848

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

113294

Kód UT WoS článku

000504505400020

EID výsledku v databázi Scopus

2-s2.0-85068740416