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Flow-injection potentiometric detection of phosphates using a metallic cobalt wire ion-selective electrode
Citation
Chen, ZL and De Marco, R and Alexander, PW, Flow-injection potentiometric detection of phosphates using a metallic cobalt wire ion-selective electrode, Analytical Communications, 34, (3) pp. 93-95. ISSN 1359-7337 (1997) [Refereed Article]
DOI: doi:10.1039/a700771j
Abstract
Flow-injection potentiometric detection of phosphate has been undertaken using a metallic cobalt wire ion-selective electrode. The electrode response to phosphate was characterised by potential readings of high stability versus a Ag/AgCl reference electrode, and results have shown that the electrode displays high sensitivity and selectivity towards the phosphate ion. The metallic cobalt wire electrode was used for the flow-injection potentiometric detection of phosphate using a 0.04 mol l-1 potassium hydrogen phthalate carrier at pH 5.0. A linear response with a slope of -38.00 ± 0.5 mV decade-1 change in phosphate activity was obtained in the range 1.0 × 10-5-5.0 × 10-3 mol l-1, and the detection limit was 1 × 10-6 mol l-1. The phosphate electrode described in this paper is robust, simple to use, highly selective, inexpensive and highly stable.
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) |
ID Code: | 12353 |
Year Published: | 1997 |
Web of Science® Times Cited: | 52 |
Deposited By: | Applied Science |
Deposited On: | 1997-08-01 |
Last Modified: | 2011-08-15 |
Downloads: | 0 |
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