Investigation of two multichannel image detectors for use in spectroelectrochemistry.
Two multichannel image detectors, a vidicon and a silicon photodiode array, were investigated for their performance as detectors in ultraviolet-visible absorption spectroelectrochemical experiments. Their spectral band-pass, dispersion, dynamic range, and precision of absorbance measurements were compared. o-Tolidine was used as a model compound to study their performance in a spectro-potentiostatic experiment using an optically transparent thin-layer electrode. Both detectors performed well, but the silicon photodiode array had twice the spectral resolution and dynamic absorbance range of the vidicon detector.
Fultz
M L
ML
Organic Analytical Research Division, National Bureau of Standards, Washington, DC 20234, U.S.A.
Durst
R A
RA