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《Shandong Agricultural Sciences》 2012-03
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Residue and Digestion Dynamics of Fluthiacet-methyl in Corn and Soil

FANG Li-ping,CHEN Zi-lei,LI Hui-dong,DING Rui-yan(Central Laboratory of Shandong Academy of Agricultural Sciences,Jinan 250100,China)  
To evaluate the security of fluthiacet-methyl to ecological environment,its residue and digestion in corn and soil were studied by field trial.After extracted with acetonitrile and cleaned up by GPC,it was determined by GC-ECD.The results showed that good linear appeared in the range of 0.031~8 μg/ml of fluthiacet-methyl with the correlation coefficient as 0.9997.The fortified recovery ranged from 89.63% to 106.66% with the relative standard deviation of 2.04%~7.98%.The half life of fluthiacet-methyl was 3.2~3.5 days in corn and 2.1~3.1 days in soil respectively,and it could be digested more than 90% on the 5th day for corn and the 7th day for soil after application.When sprayed one time with 7.5 g a.i./hm2 and 11.25 g a.i./hm2 of 5% fluthiacet-methyl EC respectively,the final residue in corn was below 0.001mg/kg on the 70th and 91st day after application.All the results indicated that the gas chromatography method was accurate and reliable for detection of fluthiacet-methyl.The detected residue of fluthiacet-methyl in corn and soil was less than the maximum residue level(0.01 mg/kg) of USA and Japan,so it could not pollute corn and soil.
【CateGory Index】: S481.8
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