Influence of the pulsed amperometric detection to the passivation of the working electrode

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10472914" target="_blank" >RIV/00216208:11310/23:10472914 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00706-023-03089-w" target="_blank" >10.1007/s00706-023-03089-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of the pulsed amperometric detection to the passivation of the working electrode

Popis výsledku v původním jazyce

The degree of passivation of the working electrode during the amperometric detection in flow can be strongly diminished by the application of pulsed amperometry, even without the application of specific cleaning pulses. Three different potential programs were tested and compared to the traditional amperometry with continuously applied potential. All three programs suppressed the passivation in different degree, although the observed efficiency depends also on the conditions of the determination, particularly the pH of the electrolyte. Simple switching between the detection potential and zero potential provided the best results; more complex potential programs shower either the lower efficiency or the low measurement frequency. The detection and quantification limit, obtained using this method, reached 5.8 x 10(-6) mol dm(-3) and 1.9 x 10(-5) mol dm(-3), respectively; their relatively high value is caused by the increase of the background current, inevitably caused by the potential changes.

Název v anglickém jazyce

Influence of the pulsed amperometric detection to the passivation of the working electrode

Popis výsledku anglicky

The degree of passivation of the working electrode during the amperometric detection in flow can be strongly diminished by the application of pulsed amperometry, even without the application of specific cleaning pulses. Three different potential programs were tested and compared to the traditional amperometry with continuously applied potential. All three programs suppressed the passivation in different degree, although the observed efficiency depends also on the conditions of the determination, particularly the pH of the electrolyte. Simple switching between the detection potential and zero potential provided the best results; more complex potential programs shower either the lower efficiency or the low measurement frequency. The detection and quantification limit, obtained using this method, reached 5.8 x 10(-6) mol dm(-3) and 1.9 x 10(-5) mol dm(-3), respectively; their relatively high value is caused by the increase of the background current, inevitably caused by the potential changes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/GA20-03187S" target="_blank" >GA20-03187S: Studium elektrochemických a adsorpčních dějů na nanostrukturovaných sp2 a sp3 uhlíkových površích ve vztahu k jejich fyzikálně chemickým vlastnostem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Monatshefte für Chemie - Chemical Monthly

ISSN

0026-9247

e-ISSN

1434-4475

Svazek periodika

154

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

5

Strana od-do

1019-1023

Kód UT WoS článku

001019483400003

EID výsledku v databázi Scopus

2-s2.0-85163396740