Electroanalytical metal sensor with built-in oxygen filter.
Detection
Electrochemical oxygen filter
Portable device
Stripping chronopotentiometry
Trace metals
Journal
Analytica chimica acta
ISSN: 1873-4324
Titre abrégé: Anal Chim Acta
Pays: Netherlands
ID NLM: 0370534
Informations de publication
Date de publication:
04 Jul 2021
04 Jul 2021
Historique:
received:
03
03
2021
revised:
07
04
2021
accepted:
17
04
2021
entrez:
29
5
2021
pubmed:
30
5
2021
medline:
30
5
2021
Statut:
ppublish
Résumé
A rapid and reliable oxygen elimination system was evaluated here for the electroanalytical study of metals. Dissolved oxygen was removed locally in the vicinity of a sensor by the means of electrochemical oxygen filter constructed from platinum grids. Three metals (Cd, Pb, and Zn) were determined by stripping chronopotentiometry (SCP) at a mercury film screen-printed electrode. Limits of detection of metals were in the nanomolar range under optimized experimental conditions. The electrochemical device was also tested for metal quantification in simple electrolyte solutions and in a natural water matrix. The proposed combination of oxygen elimination system with the metal sensor completely removes the need to purge the sample before SCP measurement. This makes the determination of metals by SCP faster, portable and more suited for on-field applications.
Identifiants
pubmed: 34049625
pii: S0003-2670(21)00370-6
doi: 10.1016/j.aca.2021.338544
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
338544Informations de copyright
Copyright © 2021 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.