Trace metal contamination of natural waters is hazardous to the environment and to the public. The adverse effects of trace metals are well known and potent metal mitigations systems have been developed. To efficiently implement the systems however, more information is needed about dynamic metal behavior in natural systems. This necessitates an in-situ analytical device that is portable and low-cost while providing a continuous measurement output. While electrochemistry has shown promise for this goal it has been limited by its temporal resolution and concerns about Hg toxicity. This paper describes a novel electrochemical technique that can perform Hg free, real-time trace metal analysis at carbon fiber microelectrodes. The application of this method to Cu (II) and Pb (II) measurements is described.