▎ 摘　　要

NOVELTY - A cadmium ion concentration detecting method involves preparing an amino-modified graphene and beta -cyclodextrin glassy carbon electrode, and preparing multiple copies of different concentrations of cadmium standard solution by utilizing three-electrode system for all standard solution for testing . The test solution is added to the buffer solution. The mixed solution is detected and measured by using square wave stripping voltammetry curve. The square wave is measured by the dissolution of a mixed solution of voltammetry. The concentration of cadmium ions is calculated. USE - Method for detecting cadmium ion concentration. ADVANTAGE - The method enables detecting cadmium ion concentration with increased sensitivity in a simple and easy manner. DETAILED DESCRIPTION - A cadmium ion concentration detecting method involves preparing an amino-modified graphene and beta -cyclodextrin glassy carbon electrode, and preparing multiple copies of different concentrations of cadmium standard solution by utilizing three-electrode system for all standard solution for testing, where the working electrode surface is modified with amino-modified graphene and beta -cyclodextrin glassy carbon electrode. The test solution is added to the buffer solution, to give a mixed solution. The mixed solution is detected by using three-electrode system. The mixed solution is measured by using square wave stripping voltammetry curve. The square wave is measured by the dissolution of a mixed solution of voltammetry to get the current value of the mixed solution to be tested. The concentration of cadmium ions in the mixed solution to be tested is calculated, where the outside surface of the working electrode is wrapped with amino modified graphene and beta cyclodextrin glassy carbon electrode.