【摘要】 设计制作了用于改换介质的简易电解池，并以旋转圆盘玻碳电极为工作电极，研究了其用于电位溶出分析改换溶出介质的可行性。以同时测定Ｐｂ２＋ 、Ｃｄ２＋ 为例，试验了改换溶出介质的条件。结果表明，改换介质可消除共存离子的干扰，只要选择合适的溶出介质，可有效地提高测定方法的分辨率和灵敏度。此方法用于矿样中铅和镉的同时测定，结果满意。更多还原

【Abstract】 A single electrolyzer for medium exchange is designed, which is successfully applied to the determination of trace cadmium and lead in a stardard mineral sample by potentiometric stripping analysis (PSA) employing rotating glassy carbon electrode as working electrode. It is demonstrated that medium exchange can seperate overlapped peaks, remove interferences of co\|existing ions and improve the sensitivity.更多还原