Detection of Ascorbic Acid Using a Carbon Fiber Microelectrode Coated with Cobalt Tetramethylpyridoporphyrazine

A carbon microfiber electrode coated with an electrodeposited cobalt chelate of a tetra- N -methylpyridoporphyrazinocobalt derivative has been used for the potentiometric detection of ascorbic acid. It is effective over a fairly wide range of ascorbic acid concentration and may have value for in vivo analysis.