Screen-printed electrodes covered by mercury film or meniscus

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F25%3A00604973" target="_blank" >RIV/61388955:_____/25:00604973 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0013468624018012?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468624018012?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2024.145565" target="_blank" >10.1016/j.electacta.2024.145565</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Screen-printed electrodes covered by mercury film or meniscus

Popis výsledku v původním jazyce

For the first time, silver screen-printed electrodes covered by mercury film (MF-AgSPE) and mercury meniscus (m-AgSPE) were designed, prepared and tested. The precise electrochemical preparation procedure for mercury deposition at the silver working electrode (WE) surface of commercial AgSPE was used. A simple and quick way to prepare m-AgSPE is transferring a precisely defined mercury drop from a hanging mercury drop electrode (HMDE) at WE. Deposited mercury dissolves silver and it gradually converts into solid or paste amalgam. The potential of hydrogen evolution with these electrodes has maximum values in aqueous solutions and is comparable to that on mercury electrodes. The 20 µm thick mercury film allows working with the liquid surface during the day and its deposition takes approximately 15 min. Testing of MF- and m-AgSPEs was performed by voltammetric methods with and without accumulation of analytes on the electrode, in a batch electrode arrangement and also in a flow-through system. For comparison, measurements were carried out with printed solid amalgam electrodes, HMDE, and also with the original commercial AgSPE. Simultaneous measurement of zinc, cadmium, lead, and copper cations on m-AgSPE by stripping voltammetry allowed to determine their concentrations <1 µg L-1. Comparison of measurements with the printed pseudo-reference electrode of SPE and an external calomel electrode showed that the differences in the peak potentials can be up to 200 mV. Commercial large-scale production of printed electrodes makes them a practically unlimited source for the rapid preparation of inexpensive electrodes with an ideally smooth liquid surface.

Název v anglickém jazyce

Screen-printed electrodes covered by mercury film or meniscus

Popis výsledku anglicky

For the first time, silver screen-printed electrodes covered by mercury film (MF-AgSPE) and mercury meniscus (m-AgSPE) were designed, prepared and tested. The precise electrochemical preparation procedure for mercury deposition at the silver working electrode (WE) surface of commercial AgSPE was used. A simple and quick way to prepare m-AgSPE is transferring a precisely defined mercury drop from a hanging mercury drop electrode (HMDE) at WE. Deposited mercury dissolves silver and it gradually converts into solid or paste amalgam. The potential of hydrogen evolution with these electrodes has maximum values in aqueous solutions and is comparable to that on mercury electrodes. The 20 µm thick mercury film allows working with the liquid surface during the day and its deposition takes approximately 15 min. Testing of MF- and m-AgSPEs was performed by voltammetric methods with and without accumulation of analytes on the electrode, in a batch electrode arrangement and also in a flow-through system. For comparison, measurements were carried out with printed solid amalgam electrodes, HMDE, and also with the original commercial AgSPE. Simultaneous measurement of zinc, cadmium, lead, and copper cations on m-AgSPE by stripping voltammetry allowed to determine their concentrations <1 µg L-1. Comparison of measurements with the printed pseudo-reference electrode of SPE and an external calomel electrode showed that the differences in the peak potentials can be up to 200 mV. Commercial large-scale production of printed electrodes makes them a practically unlimited source for the rapid preparation of inexpensive electrodes with an ideally smooth liquid surface.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA25-16569S" target="_blank" >GA25-16569S: Elektrochemické biosenzory založené na opakovaně použitelných mini-imunoreaktorech pro automatizovanou průtokovou analýzu nádorových biomarkerů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Electrochimica acta

ISSN

0013-4686

e-ISSN

1873-3859

Svazek periodika

513

Číslo periodika v rámci svazku

FEB 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

145565

Kód UT WoS článku

001398395000001

EID výsledku v databázi Scopus

2-s2.0-85213699164