▎ 摘　　要

An ethylenediamine perovskite material C2H4(NH3)(2)Pb2Br6NCs was designed and synthesized, and C2H4(NH3)(2)Pb2Br6NCs and C2H4(NH3)(2)Pb2Br6NCs/graphene oxide composite materials were used to modify glassy carbon electrodes. The cyclic voltammetry was used to determine metal ions; the results have shown good sensitivity and selectivity to Ag+ and Hg2+. In this paper, the optimizing experimental conditions are determined by investigating various control factors. This method was used to the determination of Ag+ concentration in wastewater samples from Tongling Nonferrous Metals Factory and Hg2+ concentration in water from Anqing Shitang Lake with a high recovery rate. The results are consistent with the results of inductively coupled plasma emission spectrometer measurement.