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Fast low-pressure gas chromatography-mass spectrometry method for the determination of multiple pesticides in grapes, musts and wines

Title
Fast low-pressure gas chromatography-mass spectrometry method for the determination of multiple pesticides in grapes, musts and wines
Type
Article in International Scientific Journal
Year
2009
Authors
Cunha, SC
(Author)
Other
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Oliveira, MBPP
(Author)
FFUP
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Journal
Vol. 1216 No. 48
Pages: 119-126
ISSN: 0021-9673
Publisher: Elsevier
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Publicação em ISI Web of Science ISI Web of Science
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Scientific classification
CORDIS: Technological sciences
FOS: Natural sciences > Chemical sciences
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Authenticus ID: P-003-NV6
Abstract (EN): A fast method using low-pressure gas chromatography coupled to mass spectrometry (LP-GC/MS) was implemented and optimized to yield a complete separation of 27 representative pesticides in grapes, musts and wines. Extraction was performed with acetonitrile, applying quick, easy, cheap, effective, rugged and safe (QuEChERS) methodology. Several LP-GC/MS conditions such as column temperature, injection conditions, flow rate, MS conditions and matrix effects were evaluated to achieve the fastest separation with the highest sensitivity in MS detection (selected ion monitoring mode). After optimization, all 27 pesticides were extracted, chromatographically separated and detected in less than 20 min. Acceptable recoveries for nearly all pesticides at three different spiking levels (from 0.04 to 2.5 mu g/g) were achieved with good repeatability (from 3 to 21%). Limits of quantification (from 0.02 to 5 mu g/g) were lower than the maximum limit of residues. when established for pesticides.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 8
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