Abstract: To determine residues of ethiprole and its metabolic products in the environment,a determination method is established consisting accelerated solvent extraction(ASE)with ethionine,cleaning-up extraction with florisil column and determination using a gas chromatograph(GC)equipped with an electron capture detector.Results of the experiment show that the minimum detection level of ethiprole and its metabolic products is 0.01mg·kg^-1 in soil,rice plant,rice hull and brown rice;0.01 mg·kg^-1 in paddy water.The mean recovery rate of ethiprole and its metabolic products ranged from 72.8% to 103.6% in paddy water,paddy soil,rice plant,rice hull and brown rice.And relative standard deviation of the determination varied from 1.3% to 12.5%.

Key words: ethiprole, accelerated solvent extraction(ASE), gas chromatography, pesticide residue