摘要
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。
Carbon fiber electrodes are activated by potentiostatic treatment,and used for determining metal ions directly.Activated electrode,which is not coated by mercury, shows high sensitivity in differential pulse stripping voltammetry.The detection limits near 0.5ng/ml for silver and copper are obtained.Activation procedure,electrode stability and analytical conditions are investigated.Activated electrodes have been used for the determination of copper in water samples.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1991年第11期1336-1339,共4页
Chinese Journal of Analytical Chemistry
基金
浙江省自然科学基金
关键词
银
铜
测定
溶出伏安法
碳纤维电极
Carbon fiber electrode
Potantiostatie activation
Stripping voltammetry
