The CAW modified electrode was prepared by a physical absorption method on the substrate of glassy carbon. The phosphate buffer solution (PBS) of pH 6.80 was chosen as the supporting electrolyte in the electrochemical measurements.

• 用物理吸附法将碳原子线修饰在玻碳电极表面制得碳原子线修饰电极，选择pH值为6.；80的磷酸(PBS)缓冲溶液作为研究该电极的支持电解质。