Analysis of Pesticides Residues in Fresh Produce Using Buffered Acetonitrile Extraction and Aminopropyl Cleanup with Gas Chromatography/Triple Quadrupole Mass Spectrometry, Liquid Chromatography/Triple Quadrupole Mass Spectrometry, Gas Chromatography/Ion Trap Detector Mass Spectrometry, and GC with a Halogen-Specific Detector
| Autor: | Ghislain Gerard, Jason S Stepp, Amy N Brown, Jonathan V Pelt, Jo Marie Cook, Walter Hammack |
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| Rok vydání: | 2011 |
| Předmět: |
Pharmacology
Chromatography Chemistry Selected reaction monitoring Mass spectrometry High-performance liquid chromatography Sample preparation in mass spectrometry Analytical Chemistry Triple quadrupole mass spectrometer Liquid chromatography–mass spectrometry Chromatography detector Environmental Chemistry Gas chromatography Agronomy and Crop Science Food Science |
| Zdroj: | Journal of AOAC INTERNATIONAL. 94:931-941 |
| ISSN: | 1944-7922 1060-3271 |
| Popis: | A rapid and inexpensive multiresidue method for determining pesticides in fruits and vegetables is presented. Extraction of a 15 g sample with 15 mL acetonitrile was followed by buffering with magnesium sulfate, sodium chloride, sodium citrate dihydrate, and disodium citrate. Acidification with formic acid prior to dispersive cleanup with aminopropyl sorbent and magnesium sulfate was used to stabilize base-sensitive pesticides such as chlorothalonil. Extracts were concentrated to 2 g/mL. Analyses were conducted by GC/ion trap detector MS, GC-halogen-specific detector, and LC/triple quadrupole MS. Accuracy and repeatability for 166 compounds in tomato, potato, and cabbage were 70–120% and |
| Databáze: | OpenAIRE |
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