Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1071, Issue 1-2, Pages 93-98Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2004.12.005
Keywords
polyhalogenated compounds; matrix solid-phase dispersion; gas-chromatography coupled to mass spectrometry; aquaculture feed
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An effective multiresidual method for the trace analysis of fifteen compounds from a diverse group of pesticides, polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyl (PCBs) and polybrominated biphenyl (PBBs) in aquaculture feed is described. The analytical procedure is based on the matrix solid-phase dispersion (MSPD) of feed sample and subsequent elution with hexane. The MSPD process was evaluated using an asymmetrical experimental design 2(3)3(2)//9. Factors such as C-18 sorbent amount, kind of adsorbents, solvent volume and elution mode were considered. The results suggest that the operational MSPD conditions are elution with pressure, 1g of C-18, basic alumina as adsorbent and 30 mL of hexane. The overall method including MSPD procedure and GC coupled to mass spectrometry (MS/MS) has been applied to several samples of aquaculture feed and marine species. Precision and accuracy of the analytical method were determined using the reference material from the International Atomic Energy Agency (IAEA-406), showing a good agreement to the referenced values. (c) 2004 Elsevier B.V. All rights reserved.
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