Application of High Performance Liquid Chromatography in Detection of Imidacloprid and Acetamiprid Residue in Tea

The extract of imidacloprid and acetamiprid purified by PSA was detected by HPLC to determine imidacloprid and acetamiprid residue in tea simultaneously.The results showed that 20mg/mL PSA could remove the impurity affecting chromatographic analysis in the extract after two purifications and the function indexes of the extract analyzed by HPLC all reached test demands.The PSA method with good recovery,high accuracy,conveniency easy operation and low cost can be used in routine inspection of tea.