DEVELOPMENT AND APPLICATION OF GRAPHITE-T EFLON COMPOSITE COATING ELECTRODE

In this paper, the procedure of preparation of graphite-Teflon composi te electrode (GTE) by coating was investigated. The coating consisted of a solid mixture 2.5 g(graphite 45%, Teflon 45% and PVC 10%) mixed w ith a solvent(THF: DMF = 1:4 in volume) 0.8 mL. Copper wires(phi = 0.7 mm) were coated by the coating and heated at 200 degrees C for 5 min, and the GTEs were finished. They could be modified and changed into o ther metallic Teflon composite electrode only by electroplating in cor respondent plating bath, such as mercury- cobalt- or copper- Teflon co mposite electrode. They had been applied to flow injection analysis by techniques of electrochemistry successfully.