Multiresidue Method for Determination of Sulfonylurea Herbicides in Water by Liquid Chromatography with Confirmation by Capillary Electrophoresis
| Autor: | Heidi Hickes, Matthew Watrous |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
medicine.drug_class
Sensitivity and Specificity Analytical Chemistry law.invention Cartridge Acetic acid chemistry.chemical_compound Capillary electrophoresis law medicine Environmental Chemistry Water pollution Filtration Acetic Acid Pharmacology Chromatography Herbicides Chemistry Extraction (chemistry) Pesticide Residues Electrophoresis Capillary Water Hydrogen-Ion Concentration Sulfonylurea Sulfonylurea Compounds Separation method Agronomy and Crop Science Chromatography Liquid Food Science |
| Zdroj: | Journal of AOAC INTERNATIONAL. 82:1523-1533 |
| ISSN: | 1944-7922 1060-3271 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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