Determination of N-(3-ethylsulfonyl-2-pyridinyl)-4,6-dimethoxy-2-pyridineamine in soil after treatment with rimsulfuron |
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| Authors: | Cesare Marucchini Riccardo Luigetti |
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| Abstract: | An analytical procedure to detect N-(3-ethylsulfonyl-2-pyridinyl)-4,6-dimethoxy-2-pyridineamine, a degradation product deriving from the hydrolysis of rimsulfuron in soil, has been developed. The analytical standard was prepared by basic hydrolysis of rimsulfuron at pH 9 and purification on a silica gel chromatographic column. The compound obtained was stable at high temperature, thus enabling determination by gas chromatographic analysis. Soil samples were extracted with acetonitrile, purified with a SPE C18 cartridge and analysed using both nitrogen phosphorus (NPD) and mass spectrometer detectors. The analytical procedure described proved to be sensitive and reproducible. Recoveries varied from 84 to 90%. The limit of sensitivity was 0·001 mg kg-1. © 1997 SCI. |
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| Keywords: | rimsulfuron herbicide sulfonylurea analytical procedure |
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