| EPSRC Reference: |
GR/K97011/01 |
| Title: |
NEW ULTRAMICROELECTRODE STRATEGIES FOR CHEMICAL IN SOLUTIONS AND INTERFACES. |
| Principal Investigator: |
Unwin, Professor P |
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| Department: |
Chemistry |
| Organisation: |
University of Warwick |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
23 September 1996 |
Ends: |
22 March 1999 |
Value (£): |
89,891
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Summary on Grant Application Form |
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The aim of this project is to develop new ultramicroelectrode (UME) strategies for chemical analysis in solutions and at interfaces. New MJEs will be engineered with nozzle and electrode diameters down to 10ohms and 12ohm, respectively, significantly increasing the rates of mass transfer at MJEs and improving the signal-to-noise characteristics and detection limits. The development of mercury modified MJEs will enable anodic stripping voltammetry to be carried out with greatly reduced preconcentration and analysis times, compared to exiting voltammetric procedures. A novel disc ring (dual series) MJE will be developed and fully characterised, to increase the scope of MJE detection, and a new form of hydrodynamically modulated voltammetry, with phase sensitive detection, will be introduced in which an UME is oscillated across the non-uniform flow field of an impinging jet. this mode will facilitate tract analysis and extend the available voltammetric window for analysis. The development of new probes for SECM, based on ion transfer at the interface between two immiscible electrolyte solutions, will significantly increase the range of interfacial chemical processes which can be studied with SECM to include ions which cannot be detected amperometrically in aqueous solutions.Key Words: Instrumentation, Chemistry, Analytical, Physical, Electrochemistry.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.warwick.ac.uk |