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On the Residual Dynamics of Flumetsulam in Corn and Soil

Zhang Hao,Wang Yan,Lu Zhongbin,Xu Wei (College of Resource and Environment,Jilin Agricultural University,Changchun?130118,China)  
The residual dynamics of flumetsulam in soil and corn were determined with HPLC, using a Zorbax SIL column and methylene dichloride metanol(98.4∶1.6)as mobile phase. A method for pretreatment of sample and analysis was established. Recoveries of flumetsulam in soil, corn and plant were 88.00%~ 96.80% , 90.30%~93.50% and 84.20%~94.20% respectively. Flumetsulam degrades slowly and its half life in soil was 12.1?d (Jilin)and 20?d(Shangdong), Flumetsulam degrades relatively fast and its half life was 4.3?d (Jilin)and 3.5?d(shandong), but residual flumetsulam in the soil and corn was not detected. The result showed that the residual pollution of flumetsulam is negligible, so the application of flumetsulam is safe for the soil and corn.
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