一种更新固体电极表面的新方法

由于电解产物的淀积或者电极表面的污染，在固体电极伏安法中，电极的表面状况往往发生改变，使测定结果的重现性和精密度降低。为了获得可重现的新鲜电极表面，第次测定后电极表面需要更新。在用物理方法更新电极表面时，过去常用手工擦试的方法。由于这种方法很难做到每次更新条件一致，因此，测定结果的重现性和精密度较低。作者设计的原位更新固体电极表面的方法可以提高测定结果的重现性和精密度。在同一浓度的铁溶液中，6次重复测定的相对标准偏差为0.8%。

A New Method for Renewal of Solid Electrode Surface in Voltammetric Measurement

Because of the deposition of electrolytic products and contamination, the surface condition of a working electrode is varied after each measurement. Therefore, in order to have a reproducible fresh surface, a new method for renewal of surface condition was proposed. The experimental results demonstrate that a glassy carbon electrode treated by the new method can improve the reproducibility and precision of the measurements.