Rapid Determination of Six Herbicide in Corn by Gas Chromatography ZHANG Hongling~1 ZHANG Pin~1 WANG Ying~2 NIU Sen~1 ZHOU Yanming~1 LIU Xiao~1 MA Weimin~(1;3) (1Shenyang Agriculture University;Shenyang 110161;2Institute of Applied Ecology Chinese Academy of Sciences;Shenyang 110016;3HeBei Normal University of Science and Technology;QinHuang-dao;066000) A method is described for determining 6 herbicides in com by GC.The residues of herbicides were extracted from samples with petroleum ether and the extractive removed through a neuter alumina column.Then petroleum ether/ethyl acetate(v/v,9/1)eluted it. Herbicides determination was performed with the gas chromatography(with ECD detection).Compounds were identified and determined according to their retention times and the external standard mehthod.Recoveries were obtained by adding 6 herbicides to rice(spiking at 0.50 mg/kg、0.20 mg/kg、0.10 mg/kg、0.05mg/kg、0.02mg/kg levels).The recoveries ranged from 86.5% to 112.5%,and the coefficients of variation was from 3.5% to 8.1%. 【Keyword】：Gas Chromatography;com;Herbicide;multiresidue
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