Study on Multi-residue Analysis of OP and OCl Insecticides in Grain

The multi-residue analytical method of 8 OP and 2 OCl insecticides that applied in rice, wheat and maize were reported. A gel permeation chromatography clean-up method was introduced. The fortified average recovery and variation coefficient of the above insecticides in these 3 crops were 81.74%~101.60% and 0.60%~12.53%,respectively.