Direct injection of oil or fat into a moderately heated injector enables performance of a kind of head-space technique in the injector: oil or fat is diluted 1:1 with acetone and injected into a vaporizing chamber at 200°C. Components, for example organophosphorus insecticides, evaporate from the oil on the insert wall and are transferred into the column in the splitless mode; the oil slowly flows along the wall to the bottom of the insert and is retained there in a kind of a bag. Using a flame photometric detector, detection limits are below 10 µg/kg.

Determination of organophosphorus insecticides in edible oils and fats by splitless injection of the oil into a gas chromatograph (injector-internal headspace analysis) / Grob, K.; Biedermann, M.; Giuffre', A. M.; Giuffre', Angelo Maria. - In: ZEITSCHRIFT FUER LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG. - ISSN 0044-3026. - 198:(1994), pp. 325-328. [10.1007/BF01193183]

Determination of organophosphorus insecticides in edible oils and fats by splitless injection of the oil into a gas chromatograph (injector-internal headspace analysis)

GIUFFRE', Angelo Maria
1994-01-01

Abstract

Direct injection of oil or fat into a moderately heated injector enables performance of a kind of head-space technique in the injector: oil or fat is diluted 1:1 with acetone and injected into a vaporizing chamber at 200°C. Components, for example organophosphorus insecticides, evaporate from the oil on the insert wall and are transferred into the column in the splitless mode; the oil slowly flows along the wall to the bottom of the insert and is retained there in a kind of a bag. Using a flame photometric detector, detection limits are below 10 µg/kg.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/4510
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