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SWEPT-POTENTIAL ELECTROCHEMICAL DETECTOR FOR FLOW STREAMS
Citation:
Reardon, P., G. O'Brien, AND P. Sturrock. SWEPT-POTENTIAL ELECTROCHEMICAL DETECTOR FOR FLOW STREAMS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-84/179.
Description:
An instrument has been designed, constructed, and evaluated for electrochemical measurements in flow streams. The instrument is basically a computer-controlled potentiostat with features that are necessary for measurements in flow streams. These features include real-time graphics display, rapid transfer of data to disk storage, automated compensation for IR drop, and automated d.c. current offset. The instrument can be programmed to operate in several modes, but the primary mode of operation is rapid-sweep square-wave voltammetry. Programs are available for post-run processing of the data and display of any desired voltammogram or current vs. time plot. Any alphanumeric or graphics display can be copied on a dot-matrix printer. Performance evaluations in unstirred solutions indicate limits of detection of less than 1 X 10 to the -9th power M in favorable cases. (Copyright (c) Elsevier Science Publishers B.V. 1984.)