期刊
FOOD CHEMISTRY
卷 196, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.09.014
关键词
Fatty fish; Pesticide residues; Polyaromatic hydrocarbons; Sample preparation; Gas chromatography mass spectrometry; Matrix effect
资金
- Indian Council of Agricultural Research (ICAR) National Fellow project
- National Referral Laboratory project of Agricultural and Processed Food Products Export Development Authority (APEDA)
This paper reports a selective and sensitive method for multiresidue determination of 119 chemical residues including pesticides and polyaromatic hydrocarbons (PAH) in high fatty fish matrix. The novel sample preparation method involved extraction of the target analytes from homogenized fish meat (5 g) in acetonitrile (15 mL, 1% acetic acid) after three-phase partitioning with hexane (2 mL) and the remaining aqueous layer. An aliquot (1.5 mL) of the acetonitrile layer was aspirated and subjected to two-stage dispersive solid phase extraction (dSPE) cleanup and the residues were finally estimated by gas chromatography mass spectrometry with selected reaction monitoring (GC-MS/MS). The co-eluted matrix components were identified on the basis of their accurate mass by GC with quadrupole time of flight MS. Addition of hexane during extraction and optimized dSPE cleanup significantly minimized the matrix effects. Recoveries at 10, 25 and 50 mu g/kg were within 60-120% with associated precision, RSD < 11%. (C) 2015 Elsevier Ltd. All rights reserved.
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