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首页> 外文期刊>Research & Reviews: Journal of Ecology and Environmental Sciences >Mobility of Sulfosulfuron and Its Metabolite Aminopyrimidine in Soil under Laboratory Conditions
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Mobility of Sulfosulfuron and Its Metabolite Aminopyrimidine in Soil under Laboratory Conditions

机译：实验室条件下磺胺磺隆及其代谢产物氨基嘧啶的迁移

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Leaching potential of sulfosulfuron and one of its metabolite aminopyrimidine in two different soils were studied under laboratory condition. The soils used were sandy clay with lower organic carbon content (1.25%) and clay loam having higher organic carbon content (5.5%). Sulfosulfuron and aminopyrimidine were sprayed on the surface of the soil column. The applied dosages are sulfosulfuron @ 25 g.a.i/ha, 50 g/ha, 100 g.a.i/ha and aminopyrimidine @ 5 g.a.i/ha, 10 g.a.i/ha, 20 g.a.i/ha. Collected the leachates from the columns every day after applying 60 mm of rainfall for a period of fifteen days. There after soil columns were cut in to cross sectional and analyzed for the residues of sulfosulfuron and aminopyrimidine at five cm difference in depth. A high performance liquid chromatography with Fluorescence detector was used for the quantification of residues. Limit of quantification for sulfosulfuron and aminopyrimidine was established as 0.001μg/ml. The recovery study conducted for Sulfosulfuron and aminopyrimidine at two different concentrations (LOQ and 10 × LOQ) showed mean recovery of 94.6%, 96.9% in water, 92.3%, 94.1% in Sandy clay soil and 89.2%, 90.0% in clay loam soil. Analysis of leachates collected from sandy clay soil columns showed the residues of sulfosulfuron 0.01 - 2.8 μg/ml and aminopyrimidine 0.005 to 0.76 μg/ml. Leachates collected from clay loam soil columns showed the residues of sulfosulfuron 0.001 to 0.10 μg/ml and aminopyrimidine 0.001 to 0.032 μg/ml. Sandy clay soil samples showed the residues of sulfosulfuron 0.01 to 0.09 μg/g and aminopyrimidine 0.001-0.012 μg/g and clay loam soil samples showed the residues of sulfosulfuron 0.002-0.50 μg/g and aminopyrimidine 0.006 to 0.04 μg/g. Leachates of soil columns applied with sulfosulfuron showed the residues of metabolites such as aminopyrimidine, desmethyl sulfosulfuron, substituted guanidine, rearranged amine and sulfonamide. Metabolites were confirmed by Electrospray tandem mass spectrometry (LC-MS/MS-ESI) analysis.
机译：在实验室条件下，研究了磺胺磺隆及其代谢产物之一氨基嘧啶在两种不同土壤中的淋溶潜能。使用的土壤是有机碳含量较低（1.25％）的砂质粘土和有机碳含量较高（5.5％）的壤土。将磺胺磺隆和氨基嘧啶喷在土壤柱的表面。施用的剂量是磺基磺隆@ 25 g.a.i / ha，50 g / ha，100 g.a.i / ha和氨基嘧啶@ 5 g.a.i / ha，10 g.a.i / ha，20 g.a.i / ha。每天降雨60毫米，持续15天后，每天从柱子中收集渗滤液。之后将土壤柱切成横截面，并分析深度差为5 cm的磺胺磺隆和氨基嘧啶的残留量。使用带有荧光检测器的高效液相色谱法对残留物进行定量。磺胺磺隆和氨基嘧啶的定量限为0.001μg/ ml。对磺硫磺隆和氨基嘧啶在两种不同浓度（LOQ和10×LOQ）下进行的回收率研究表明，平均回收率分别为94.6％，96.9％，92.3％，94.1％，沙质粘土和89.2％，90.0％ 。分析从砂质粘土土柱中收集到的渗滤液，发现磺胺磺隆的残留量为0.01-2.8μg/ ml，氨基嘧啶的残留量为0.005至0.76μg/ ml。从黏土壤土柱中收集的渗滤液显示残留的磺磺隆为0.001至0.10μg/ ml，氨基嘧啶为0.001至0.032μg/ ml。砂质粘土样品显示磺胺磺脲的残留量为0.01至0.09μg/ g，氨基嘧啶为0.001-0.012μg/ g，粘土壤土样品表明磺胺磺隆的残留量为0.002-0.50μg/ g，氨基嘧啶的残留量为0.006至0.04μg/ g。施用磺胺磺隆的土壤柱渗滤液显示出代谢产物的残留物，例如氨基嘧啶，去甲基磺磺隆，取代的胍，重排胺和磺酰胺。代谢物通过电喷雾串联质谱法（LC-MS / MS-ESI）分析确认。

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