Copper oxide based flow-through detector for glucose determination Original Research Article

Spherical glass beads were coated with a copper oxide film prepared by electroless copper plating and chemical oxidation. A flow-through detector filled with the glass beads was fabricated. Sensitive detection of glucose was possible. The detector had a low resistance to flow and didn’t suffer from a large dead volume. The hydrodynamic current at constant potential was about 100 times larger than that for the conventional, plate-type detector. Although reproducibility was rather poor, current peaks corresponding to ca. 1 fmol could be detected.