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A Photo-Cured Coated Wire Potassium Ion-Selective Electrode for Use in Flow Injection Potentiometry
Citation
Alexander, PW and Dimitrakopoulos, T and Hibbert, DB, A Photo-Cured Coated Wire Potassium Ion-Selective Electrode for Use in Flow Injection Potentiometry, Electroanalysis, 9, (11) pp. 813-817. ISSN 1040-0397 (1997) [Refereed Article]
DOI: doi:10.1002/elan.1140091102
Abstract
A potassium ion selective electrode (ISE) is reported based on the epoxyacrylate polymer prepared from o-nitrophenyl octyl ether as the plasticizer and 2,2′-bis [3,4-(15-crown-5-)-2-nitrophenylcarbamoxymethyl]tetradecane (BME-44) as the ionophore. Several different electrodes were studied by photo-curing different membranes onto a silver wire (0.8mm i.d.), and the response characteristics were evaluated. The membranes prepared exhibited strong adhesion to the metal substrate and showed improved mechanical strength compared to poly(vinyl chloride)-based membranes. The sensor exhibited Nernstian response over a log-linear range of between 0.01 mM and 100mM, and was selective against the common interfering ions. Fast response reaching 90% of steady-state value in 5 s makes this sensor applicable for flow injection potentiometry measurements. The potassium ISE allows for accurate determinations of potassium in various water samples by flow injection potentiometry.
Item Details
Item Type: | Refereed Article |
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Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Instrumental methods (excl. immunological and bioassay methods) |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Alexander, PW (Professor Peter Alexander) |
UTAS Author: | Dimitrakopoulos, T (Mr Telis Dimitrakopoulos) |
ID Code: | 12282 |
Year Published: | 1997 |
Web of Science® Times Cited: | 8 |
Deposited By: | Applied Science |
Deposited On: | 1997-08-01 |
Last Modified: | 2011-08-15 |
Downloads: | 0 |
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