Multiresidue method for determination of sulfonylurea herbicides in water by liquid chromatography with confirmation by capillary electrophoresis

作     者：Hickes, H Watrous, M 

作者机构：Montana State Univ Agr Sci Div Lab Bur Montana Dept Agr Bozeman MT 59717 USA 

出 版 物：《JOURNAL OF AOAC INTERNATIONAL》 (国际公职分析化学师协会志)

年 卷 期：1999年第82卷第6期

页      面：1523-1533页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 09[农学] 0703[理学-化学] 

主　　题：醋酸 色谱法 液相/方法 电泳 毛细管 除莠剂/分析 氢离子浓度 农药残留量/分析 敏感性与特异性 磺酰脲化合物/分析 水/化学 

摘      要：A liquid chromatographic method with comfirmation by capillary electrophoresis was used to determine 12 sulfonylurea herbicides in agricultural water. Analysis of 3 different water matrixes fortified at 2 levels gave good recoveries with adequate sensitivity at the 0.1 ppb level. A portion of the water was acidified with acetic acid and loaded onto an RP-102 solid-phase extraction (SPE) cartridge, and the extract was cleaned up on an alumina SPE cartridge. Extracts were desalted with an RP-102 SPE cartridge before instrumentation. Samples needing chemical filtration, such as pond water, required additional cleanup with a SAX SPE cartridge before the alumina cleanup step. Data were compiled for both determinative techniques and evaluated.