Abstract: An novel method for determination of sodium bisulfoxylate formaldehyde residue in rice cake was developed.The sodium bisulfoxylate formaldehyde residue in rice cake was extracted by water,separated by using a IonPac AS18 analytical column and determined by the external standard method.The thermal stability of sodium bisulfoxylate formaldehyde and the resolution of ion chromatography between coexistent ions and sodium bisulfoxylate formaldehyde were also studied.Under selected condition of ion chromatography,the linear range,recoveries and detection limit are 0.1 to 200 mg/kg,87.8% to 101.32% and 0.05 mg/kg,respectively,and the relative standard deviation(n=5) is between 3.27% and 5.00%.The proposed method is simple and rapid.

Key words: rice cake, sodium bisulfoxylate formaldehyde residue, ion chromatography detection