期刊
ANALYTICA CHIMICA ACTA
卷 596, 期 2, 页码 285-290出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2007.06.005
关键词
solid-phase microextraction; gas chromatography; mass spectrometry; polycyclic aromatic hydrocarbons; milk
A method for the determination of 16 polycyclic aromatic hydrocarbons (PAHs) in milk and related products based on direct immersion-solid phase microextraction (DI-SPME) followed by gas chromatography-mass spectrometry detection (GC-MS) has been developed. The influence of various parameters on PAH extraction efficiency was carefully monitored. Good performance (recovery, precision and quantitation limits) was attained when a PDMS/DVB fiber was immersed in the sample for 60 min at 55 degrees C. Detection limits ranged from 0.003 to 1.5 mu g L-1 at a signal-to-noise ratio of 3, depending on the compound and the sample. The proposed method was successfully applied to infant formulas, milk and related products and the presence of both fluoranthene and pyrene in two samples was confirmed. (c) 2007 Elsevier B.V. All rights reserved.
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