An experimental study of phase-sensitive ac voltammetry in continuous-flow streams—reversible systems

✍ Scribed by Edward D. Kingsley; David J. Curran

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 437 KB
• Volume: 2
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.1140020403

✦ Synopsis

Departmen? of Chemisly, Uniuersi& of Mmachusells, Amhwsl, i%f~~sad~rrserl.s 01 00.3. 1 ISA AKSTKACT Fundaniental harmonic ac voltammctr-y at flow-hy wall electrodes w x ti )unci experimentally t o be indepencient o f the flow rate for rates from 0 t o 2.1 I./min. Me;isurements were made with phasesensitive instrumentatioti. Tlie ac peak current depcnclence o n tlie concentration, the frequency and amplitude o f the applied ac voltage, iund the dc scan rate was the same in flowing o r stationary solutions. The shape o f the ac voltanimogt-ani was also not influenccd Iiy the flow rate. These results Lire general for experimental conditions that produce unrestricted diffusion and that maintain simple, reversible electron-tran.sfcr mc~clianisms.