Instrumental Configurations and Electrode Design for Voltammetry in very Dilute Solutions Employing Carbon, Gold and Platinum Microdisk Electrodes in Static and Flow through Cells.
Abstract
Microelectrodes are predicted to provide greater analytical sensitivity than conventional-size electrodes. In this work, convenient methods of preparing platinum, gold and carbon fibre microdisk electrodes in stationary and flowing solution configurations are presented and instrumental requirements for measurement of current-voltage curves with low concentrations assessed. The detection of micromolar or lower concentrations with microdisk electrodes requires measurement of femtoamp currents and is outside the range of most commercially available instrumentation. Fortunately, the ohmic (iR) drop with microelectrodes is very small and reference electrode polarization is unimportant so that a two electrode format without a potentiostat can be employed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 30, 1986
- Accession Number
- ADA193750
Entities
People
- A. M. Bond
- J. W. Bixler
- P. A. Lay
- Stanley Pons
- W. Thorman
Organizations
- University of Utah