CONSkJCTION, OPERATION AND EVALUATION OF A RAPID-RESPONSE POTENTIOSTAT

نویسندگان

  • TIMOTHY E. CUMMINGS
  • MARK A. JENSEN
  • PHILIP J. ELVING
چکیده

Ahatcaet Factors involved in construction and utilization of an inexpensive, rapid-response potentiostat with 50 mA current capabilities are discussed. The potentiostat can be used with ancillary units, eg function generators, for a variety of rapid perturbation approaches, eg cyclic voltammetry at scan rates to 4000 V/s or greater, potential-step chronoamperometry with data acquisition after 40~ or less, pulse polarography at millisecond or shorter discharge times, and phase-selective (IC polarography at frequencies to at least 15 kHz. Examination of the Fe(III/II) couple reversibility in oxalate media, the adsorption of adenine, and the dimerixation of the NAD free radical are described.

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تاریخ انتشار 2001