A microcomputer-controlled square-wave polarograph.
A dedicated microcomputer has been developed for control and operation of a square-wave polarograph. Microcomputer control allows a high degree of variation in the experimental parameters, such as square-wave frequency, gate delay times, gate aperture, drop-time, the amplitude of the square wave, and the magnitude of the staircase rise, but still maintains the required coherency in the signals so that an appropriate separation between the faradaic and capacitance currents is achieved. The variation is achieved through software control. Measurement is accomplished by the application of a multiplicity of square waves to each "tread" of a staircase voltage, thus providing a true square-wave polarogram.
Buchanan
E B
EB
Chemistry Department, University of Iowa, Iowa City, Iowa 52242, U.S.A.
Sheleski
W J
WJ