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《Agrochemicals》 2018-01
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Residue Analysis and Leaching Behavior of Flumetsulam in Soil

LI Jing-zhuang;DUAN Ya-ling;YANG Hong-bo;Guizhou Academy of Testing and Analysis;  
[Aims] An analysis method using high performance liquid chromatography was developed for the determination of flumetsulam residues in three typical soils. Typical methods of soil thin-layer were adopted to investigate the leaching behavior of flumetsulam in three typical soils. [Methods] The determination of flumetsulam residues was conducted with the mixture solution of acetonitrile and 0.5 mol/L hydrochloric acid(39 ∶1, by vol) as extraction agent, the mixture solution of acetonitrile and 0.1% phosphoric acid(55 ∶45, by vol) as mobile phase,Shim-pack CLC-ODS(M) column as fix phase at 220 nm, and the result was quantified by external standard method.[Results] The results showed that there was a good linear relationship between the target substance concentration and the peak area in the range of 0.2-50 mg/L. The average recoveries in soil were 77.6-104.5% at the fortified levels of 1.0 and 10.0 mg/kg, and the relative standard deviation was 1.5-3.5%. According to the Chinese guidelines on environmental safety assessment for chemical pesticides, the migrations of flumetsulam in black soil were classified as mobile, not mobile in red soil, easily mobile in paddy soil. [Conclusions] The detection method was rapid, sensitive and stable. Thus it could be applied to determine flumetsulam in soil. The migration of flumetsulam could be influenced by water solubility and p H value of soil. Thus attention should be paid to the pollution problem of groundwater caused by flumetsulam.
【Fund】: 黔科院J合字[2016]16号;贵州茶叶品质高质化技术与信息化合作研究(2015DFA41280);; 黔科中引地[2016]4001号、黔科合支撑[2016]2578-2号;西南地区典型茶园环境污染检测与评价和贵州典型区域土壤有机污染物污染特征研究项目(2010DS700124-KF1708)
【CateGory Index】: O657.72;S481.8
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