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- W1976557392 abstract "The technique of rapid scanning amperometric detection is described. This method combines an ability to perform rapid potential scanning of the analyte, which facilitates the construction of a three-dimensional current trace at different potentials versus time, with the technique of pulsed amperometric detection, which allows the application of cleaning/activation pulses to the detection electrode. Unlike pulsed voltammetry with scanning voltammetric detection, which is described by other workers, this method employs a true microelectrode as the detector (an array of eight 5 µm band electrodes). Rapid scanning and pulsing is possible without interference from non-faradaic charging currents that may mask the faradaic signals. Catecholamine separation by high-performance liquid chromatography was selected as a model system to demonstrate the detection method in flowing streams. Measurements were made using a series of different pulsing rates; no distortion of the voltammetric signal was observed up to a pulsing rate of 20 ms, 50 Hz (effective scan rate, 4.4 V s–1). Comparison with a series of d. c. amperometric measurements at a set of different potentials demonstrates the scope of analyte information that this technique makes available. Analyte data can be obtained in both electrochemical and chromatographic domains." @default.
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- W1976557392 date "1994-01-01" @default.
- W1976557392 modified "2023-10-18" @default.
- W1976557392 title "Rapid scanning voltammetric detection in flowing streams" @default.
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- W1976557392 doi "https://doi.org/10.1039/an9941900273" @default.
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