Abstract: A GC method for the determination of 9 acetanilide herbicides and atrazine, metribuzin residues in cereals and oil seeds was developed. Herbicide residues were extracted from rice and soybean samples with acetone-water mixture. Extracts were cleaned up with a Florisil SPE column and analyze by DB-35 capillary gas chromatography column. The recoveries obtained from rice and soybean samples spiked with standards are in the ranges of 70.5%～96.0%. Relative standard deviations(n=10) are below 6%. Correlation coefficients are above 0.9989. Limits of quantitative of all herbicides are 0.02 mg/kg. The method is accurate, sensetive and suitable for the determination of herbicide residues.

Key words: capillary gas chromatography method, acetanilide herbicides, cereals, oil seeds