Oleate functionalized magnetic nanoparticles as sorbent for the analysis of polychlorinated biphenyls in juices
Magnetic oleate-coated Fe3O4 nanoparticles were applied to the extraction of PCBs from fruit juices that were quantified by gas chromatography coupled to triple quadrupole mass spectrometry. Two methods were evaluated The first method involves a two-step procedure that combines dispersive liquid-liquid microextraction with dispersive micro-solid phase extraction, and the second one involves magnetic solid-phase extraction (mSPE) carried out in a single step. The mSPE procedure is shown to be more sensitive, and therefore, it was optimized and applied to the analysis of PCBs in juices. The detection limits for all target PCBs are below 6 ng∙L−1 for apple juice, and 3 ng∙L−1 for grape juice. The enrichment factor is 125. Analysis of spiked fruit juice samples gave relative recoveries higher than 70 % for all PCBs except for PCB28 and PCB52. [Figure not available see fulltext.] © 2015, Springer-Verlag Wien.
| Main Authors: | , , , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Springer Nature
2016
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| Subjects: | Magnetic solid-phase extraction, Magnetic nanoparticles, Gas chromatography–tandem mass spectrometry, Oleate coating, Dispersive liquid-liquid microextraction, Dispersive micro-solid phase extraction, |
| Online Access: | http://hdl.handle.net/20.500.12792/3415 http://hdl.handle.net/10261/295263 |
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