ANALYTICAL APPLICATION OF SQUARE WAVE VOLTAMMETRY

The previously proposed theory for square wave voltammetry (SWV) is verified by results obtained using the iron (III/II) oxalate redox system. The method used to generate the potential-time waveform and the operation of the instrument are briefly described. The application of this technique to analysis is examined and detection limits—e.g., 2.5 × 10−8M for n = 3—for representative redox couples are presented. The results indicate that SWV offers most of the advantages of square wave polarography and is accomplished in much shorter analysis times, inasmuch as sweep rates of 50 sec/V or less are employed as opposed to the 1060 min/V rates used in square wave polarography. © 1969, American Chemical Society. All rights reserved.