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本文报道了恒电位活化和清洗碳纤维电极并直接用于测定金属离子的方法。活化后的电极无需镀汞,在测定中显示了很高的灵敏度,采用示差脉冲溶出伏安法测定 Ag 和 Cu 的检测限可达0.5ng/ml。本文对电极的活化方法、重现性、分析条件进行了研究’并用活化碳纤维电极对实际水样进行了测试。
In this paper, a method of potentiostatic activation and cleaning of carbon fiber electrodes for direct determination of metal ions has been reported. The activated electrode does not require mercury plating, and shows very high sensitivity in the measurement. The detection limit of Ag and Cu is up to 0.5ng / ml by differential pulse stripping voltammetry. In this paper, the electrode activation method, reproducibility, analysis of the conditions were studied ’and activated carbon fiber electrode for the actual water samples were tested.