Artykuł w czasopiśmie
Brak miniatury
Licencja
Dostęp zamkniętyFluorimetric readout of ion-selective electrode potential changes
| dc.abstract.en | A novel method of quantitative optical readout of potentiometric responses of ion-selective electrodes is proposed. This idea was realized in a simple self-powered bipolar electrode system, with an ion-selective pole directly connected with the second pole, where a fluorimetric signal is generated. In this way, space and time separated optical readout and sampling can be achieved. This concept was tested on a model example of a system containing potassium-selective electrode (ISE-K) with polypyrrole solid contact, connected to a zinc wire immersed in the solution. In this arrangement increase of potassium ions activity in the solution results in change of the membrane potential of ISE-K, inducing reduction of polypyrrole solid contact and corresponding oxidation of the other omponent - zinc. Increase of zinc ions concentration is read as increase of emission intensity. Thus, this simple system allows quantitative in situ potassium ions determination, with the fluorescence intensity being a linear function of logarithm of analyte activity in solution in turn-on mode. Moreover, due to simplicity of the system and presence of reactants in the solution phase, a quantitative correlation between electrochemical and optical behaviour was confirmed and indications for the system optimization could be proposed. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Maksymiuk, Krzysztof |
| dc.contributor.author | Jaworska, Ewa |
| dc.contributor.author | Michalska-Maksymiuk, Agata |
| dc.date.accessioned | 2024-01-25T01:13:58Z |
| dc.date.available | 2024-01-25T01:13:58Z |
| dc.date.issued | 2018 |
| dc.description.finance | Nie dotyczy |
| dc.description.volume | 284 |
| dc.identifier.doi | 10.1016/J.ELECTACTA.2018.07.130 |
| dc.identifier.issn | 0013-4686 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/107305 |
| dc.language | eng |
| dc.pbn.affiliation | chemical sciences |
| dc.relation.ispartof | Electrochimica Acta |
| dc.relation.pages | 321-327 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.subject.en | Ion-selective electrode |
| dc.subject.en | Bipolar electrode |
| dc.subject.en | Fluorimetry |
| dc.subject.en | Transduction of potentiometric response |
| dc.title | Fluorimetric readout of ion-selective electrode potential changes |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |