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Title: Clean-up of aqueous acetone vegetable extracts by solid-matrix partition for pyrethroid residue determination by gas chromatography-electron-capture detection
Authors: Di Muccio, Alfonso
Attard Barbini, Danilo
Generali, Tiziana
Pelosi, Patrizia
Ausili, Antonella
Vergori, Fabio
Camoni, Ivano
Issue Date: 1997
Publisher: Elsevier
Citation: Di Muccio A, Attard Barbini D, Generali T, Pelosi P, Ausili A, Vergori F, Camoni I. Clean-up of aqueous acetone vegetable extracts by solid-matrix partition for pyrethroid residue determination by gas chromatography-electron-capture detection. Journal of chromatography 1997;765(1):39-49.
ispartof: Journal of chromatography
Language: en
Type: Article
Peer reviewed: yes
Abstract: Da MEDLINE: Disposable, ready-to-use cartridges filled with macroporous diatomaceous material are used to carry out a partition clean-up that, in a single step, is capable of transferring pesticide residues from aqueous acetone extracts into light petroleum-dichloromethane (75:25, v/v). This procedure takes the place of some functions (such as separatory-funnel partition, drying over anhydrous sodium sulphate and partial adsorption clean-up) usually performed by separate steps in classical schemes. Fourteen pyrethroid pesticides, including tefluthrin, tetramethrin, cyphenothrin, cyfluthrin, flucythrinate, tau-fluvalinate, deltamethrin, bioallethrin, fenpropathrin, lambda-cyhalothrin, permethrin, alpha-cypermethrin, esfenvalerate and tralomethrin were determined using the described procedure with satisfactory recoveries for most of them, at spiking levels ranging from 0.08 to 0.82 mg/kg for the different compounds. Crops subjected to the described procedure included strawberry, apple, and orange gave extracts containing a mass of co-extractives that was 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 the preparation and maintenance of equipment. Troublesome emulsions such as those frequently observed in separation funnel partitioning do not occur
ISSN: 0021-9673
Appears in Collections:6 - Pubblicazioni su serie non edite da ISS

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