Determination of N -(3-ethylsulfonyl-2-pyridinyl)-4,6-dimethoxy-2-pyridineamine in soil after treatment with rimsulfuron

✍ Scribed by Marucchini, Cesare; Luigetti, Riccardo

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 263 KB
• Volume: 51
• Category: Article
• ISSN: 1526-498X
• DOI: 10.1002/(sici)1096-9063(199709)51:1<102::aid-ps588>3.0.co;2-h

✦ Synopsis

An analytical procedure to detect N-(3-ethylsulfonyl-2-pyridinyl)-4,6dimethoxy-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 puriÐcation 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, puriÐed 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 0É001 mg kg~1.