Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1008, Issue 2, Pages 247-252Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(03)00937-3
Keywords
food analysis; difficult matrix introduction; direct thermal desorption; automation; gas chromatography-time-of-flight mass spectrometry; pesticides
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A procedure for the fully automated analysis of food samples by means of difficult matrix introduction-gas chromatography-time-of-flight mass spectrometry (DMI-GC-ToF MS) is discussed. After extraction, samples require very little clean-up and are injected in a micro- or mu-vial which is held in a liner. Next, the liner is placed in the injector and the contents of the vial are thermally desorbed and led directly to the capillary GC column. After GC-ToF MS analysis, the data are processed automatically using a peak deconvolution algorithm. The practicability of the procedure was demonstrated by analysing spiked grape and pineapple samples down to the 1-10 ng/g concentration level. (C) 2003 Elsevier B.V. All rights reserved.
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