Abstract: Salty fish products are often antisepticised through being marinated in organophosphorous pesticides such as trichlorphon, dichlovos and methamidophos, which endangers lives of people. A method was introduced in this paper to detect the residues of the three pesticides in salty fish products by GC. Fish tissue was equalized by agitator and was marinated in the solution of acetone/dichloromethane (1:1) that extracted the residue of organophosphorous pesticides in Cirrhinus molitorella fish products-one kind of salty fish products; then the result was analyzed quantificationally by external standard method. The results showed that the minimum detection limit was 0.002mg/kg with high separated degree and wide linear relation if the sample was about 0.5g. The results indicated that the recoveries were from 75.6% to 89.3%, relative standard deviation from 3.3%～7.0% and coefficients of variation range in 1.05%～10.12%. The method was a quick and practical analysis detection method suitable for the requirement of residue determination of pesticides completely.

Key words:  , gas chromatogram； organophosphorous pesticide； salty fish product；