Application of solid-phase partition cartridges in the determination of fungicide residues in vegetable samples
| Autor: | D. Attard Barbini, M. Ventriglia, Silvana Girolimetti, Tiziana Generali, Angela Santilio, Roberto Dommarco, Antonella Ausili, A. Di Muccio, Luciano Vergori |
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| Rok vydání: | 1993 |
| Předmět: |
Chromatography
Gas Iprodione Chromatography Pyrazophos Organic Chemistry Pesticide Residues Food Contamination General Medicine Diatomaceous Earth Biochemistry Fungicides Industrial Analytical Chemistry chemistry.chemical_compound Triadimefon chemistry Captafol Fruit Vegetables Hexaconazole Vinclozolin Procymidone Captan |
| Zdroj: | Journal of Chromatography A. 643:363-368 |
| ISSN: | 0021-9673 |
| DOI: | 10.1016/0021-9673(93)80572-p |
| Popis: | Disposable, ready-to-use cartridges filled with a macroporous diatomaceous material are used to extract in a single step fungicide residues with dichloromethane from aqueous acetone extracts of vegetables. This procedure takes the place of some functions (such as separating funnel partition, drying over anhydrous sodium sulphate and clean-up) usually performed by separate steps in classical schemes. Fourteen fungicides (dichloran, vinclozolin, chlorthalonil, triadimefon, dichlofluanide, procymidone, hexaconazole, captan, folpet, ditalimfos, iprodione, captafol, pyrazophos and fenarimol) were determined using the described procedure with recoveries between 83 and 107% at spiking levels ranging for the different compounds from 0.04 to 0.40 mg/kg. Crops subjected to the described procedure included lettuce, strawberry, apple, yellow pepper and peach, and gave extracts containing a mass of co-extractives between 5 and 30 mg. Compared with classical schemes, the described procedure is simple, less labour intensive, allows parallel handling of several extracts and does not require preparation and maintenance of equipment. Troublesome emulsions such as those frequently observed in separating funnel partitioning do not occur. |
| Databáze: | OpenAIRE |
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