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    Rapid-sweep Electrochemical Detector For Chemical Analysis Of Flow Streams

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    4628463.pdf (939.7Kb)
    Date
    12/9/1986
    Author
    Sturrock, Peter E.
    O'Brien, Gerald E.
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    Abstract
    A system for identification and quantification of electrochemically active compounds in a flow stream involves stepping the electrode potential in a detector rapidly through the range of interest with a square wave superimposed on a staircase signal and recording the current response as functions of step number and sweep number, i.e., as functions of voltage and time. From the recorded data, a three-dimensional graph (potential, time and current) is structured and from which identification and quantification of the electrochemically active compounds is effected with minimum expenditure of time. The system includes a potentiostat controlled by a computer with, however, independent logic control contained in the potentiostat. Provision is also made to compensate automatically for variations in resistance between the cell electrodes.
    URI
    http://hdl.handle.net/1853/57709
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