Abstract: This paper reports the behavior of trace metals at mercury film carbon fiber electrodes in differential pulse stripping voltammetry. In comparison with glassy carbon electrodes and hanging mercury drop electrodes, carbon fiber electrodes show many advantages in quiescent solution, dilute solution, organic solution and a double-electrode system. This paper discusses the preparation and pretreatment of carbon fiber electrodes and the measurement conditions.

Key words: Carbon fiber, Microelectrode, Stripping voltammetry