Determination of Cadmium Content in Grain by Anodic Stripping Voltammetry

An anodic stripping voltammetry method was established for fast determination of cadmium content in grain.Samples were dealt with microwave digestion，by using glassy carbon electrodes as working electrode，AgAgCl electrode as reference electrode and platinum electrode as counter electrode for determination of cadmium content in grain.The detection limit of method was 0.4 μgL.A standard adding method was used and average recovery rate was between 100% and 104%.A sample of a certain concentration was determined for 6 times，with a coefficient of variation of 2.43%.This method was stable，rapid and accurate，and could be widely used in emergency monitoring of food safety accidents.