期刊
ANALYTICA CHIMICA ACTA
卷 582, 期 1, 页码 19-23出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2006.08.042
关键词
acrylamide; solid-phase microextraction; gas chromatography-mass spectrometry; positive chemical ionization; French fries; potato crisps
A method has been developed to determine acrylamide in aqueous matrices by using direct immersion solid-phase microextraction (SPME) coupled to gas chromatography-positive chemical ionization tandem mass spectrometry (GC-PCI-MS-MS) in the selected reaction monitoring (SRM) mode. The optimized SPME experimental procedures to extract acrylamide in water solutions were: use of a carbowax/divinyl benzene (CW/DVB)-coated fiber at pH 7, extraction time of 20 min and analyte desorption at 210 degrees C for 3 min. A detection limit of 0.1 mu g L-1 was obtained. The linear range was 1-1000 mu g L-1. The relative standard deviation was 10.64% (n = 7). The proposed analytical method was successfully used for the quantification of trace acrylamide in foodstuffs such as French fries (1.2 mu g g(-1)) and potato crisps (2.2 mu g g(-1)). (c) 2006 Elsevier B.V. All rights reserved.
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