Abstract: A new flow injection chemiluminescence(FICL) method for the determination of dichlorvos was developed. The method is based on the CL reaction of dichlorvos with luminolH2O2in the alkaline medium and sensitized by the nonionic surfaceactive agent polyoxyethyle octyl phenyl ether. The results show that the CL intensity is linear to the concentration in the range of 8.00×1 0－8～2.50×10－5　g/mL， with a detection limit of 2.20×10－8g/mL.　The standard addition recovery and relative standard deviation (n=6) of three samples were 94.0%～104% and 4.27%～5.75%, respectively. This method has been applied to the determ ination of dichlorvos residues in crops and vegetables.

Key words: flow injection, chemiluminescence, luminol, dichlorvos