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本文研究了玻碳汞膜电极计时电位港出法，方法可对溶液中1×10-10g／wL以上宽达4个数量级的Cu2+、Pb2+、Cd2+进行测定.发样测试相对标差小，回收率高.
In this paper, the determination of Cu2 +, Pb2 + and Cd2 + in the glassy carbon hydride electrode by chronopotentiometric method is studied, and the method can be used to determine Cu2 +, Pb2 +, Cd2 + in the solution of 1 × 10-10g / High rate.