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Detector Electroquímico ATAS ED 703



Electrochemical detectors designed as an amperometry are adaptable to various analysis only by exchanging the working electrodes, and are well-suited to the downsized techniques such as microbore and capillary LC. Although noble metal and metal electrodes such as gold, platinum, and silver, are used for the specific case, glassy carbon electrodes, which are strong to chemicals and are chemically inert, have been become widespread in almost electrochemical analysis. Even if glassy carbon permeated widely in the field of electrochemistry was been used in prolonged periods, however, adsorption of a reactant product is not avoided but needs periodically to perform electrode surface polish by the slurry of diamond or alumina.
Conductive diamond electrodes classified into carbon electrodes are becoming increasingly attractive as a new electrode material, particularly in the electroanalytical field. Highly boron-doped diamond electrodes outperform glassy carbon electrodes, due to their greater stability, low background current, and wide potential window. As shown in Figure 1, the synthesized diamonds are polycrystalline thin film, and the surface roughness of the conductive boron-doped diamond is ca. 100 nm so that it is available to apply as a working electrode of a flow cell in flow injection analysis (FIA) and HPLC.
In the present note, the performance of the developed electrochemical detector with diamond electrode (model ED703) is verified and the applied results for HPLC are introduced.

Detector Electroquímico ATAS ED 703