摘要
直流失调电压和交流阻抗是心电电极两个重要的电性能．在电极胶一定的条件下，直流失调电压值具有一定的随机性，其平均值随电极芯金属材料的不同而不同，取决于相应金属材料的电极电势的稳定性；交流阻抗主要受金属材料、贴合时间等因素的影响．研究发现：将金属材料氯化可以降低电极对的直流失调电压和交流阻抗，改善电极的电性能．
DC offset vlotage and AC impedance are the two important electrical properties of ECG electrodes.With the identical electrode gel, DC offset voltage of an electrode pair has a random character and its mean value depends on the electrode potential stability of the metal; AC impedance is affected by its material and sticking time. It is found that chlorinating metals will decreasd DC offset voltage and AC impedance,and improve electrical properties.
