Abstract: To establish a method of QuEChERS combined with GC-FPD for detection of the 33 kinds of pesticide residues in aquatic vegetables. To discuss different extractants and effect of matrix on the effect of the analysis influence. The method was used to organophosphorus pesticide residues of detection in aquatic vegetables. The results showed that the average recoveries were in range of 80.1%~106.5%, and relative standard deviatons were 1.0%~6.3%. The limits of quantification were in range of 0.010 0~0.021 3 μg/mL.

Key words: QuEChERS, GC-FPD, aquatic vegetables, organophosphorus pesticide residues