| Shape-selective extraction of PCBs and dioxins from fish and fish oil using in-cell carbon fractionation pressurized liquid extraction. | |
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MedLine Citation:
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PMID: 17343366 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper describes a new shape-selective, pressurized liquid extraction (PLE) procedure for extracting polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and PCBs from food and feed samples with an integrated carbon fractionation step. Initially this was done using specially designed inserts for 34-mL cells, but subsequently, large solid cells (66 mL) were machined to increase the capacity and robustness of the system. Depending on the carbon load and extraction solvent strength, the non-ortho PCBs were recovered either with the bulk of the PCBs or with the PCDD/Fs. The former is preferable if PCDD/Fs are the targets. In most cases, however, data are required for all indicator PCBs, WHO-PCBs, and PCDD/Fs. Therefore, further efforts focused on developing, optimizing, and validating a cost- and time-efficient PLE procedure that can extract these targets, separate non-ortho PCBs and PCDD/Fs from the bulk of the PCBs, allow gravimetric fat determinations, and requires a minimum of postextraction cleanup. The performance of the resulting procedure was assessed in experiments with a fish tissue reference material. The trueness of the WHO-PCB-TEQ, PCDD/F-TEQ, and total-TEQ data were -8, -5, and -7%, respectively, and the corresponding CVs were 1.5, 0.5, and 1.3%; within the limits set by the European community for gas chromatography-high-resolution mass spectrometry methods for food and feed control. |
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Authors:
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P Haglund; S Sporring; K Wiberg; E Björklund |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-03-08 |
Journal Detail:
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Title: Analytical chemistry Volume: 79 ISSN: 0003-2700 ISO Abbreviation: Anal. Chem. Publication Date: 2007 Apr |
Date Detail:
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Created Date: 2007-03-30 Completed Date: 2007-06-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
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Languages: eng Pagination: 2945-51 Citation Subset: IM |
Affiliation:
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Department of Chemistry, Umeå University, S-901 87 Umeå, Sweden. peter.haglund@chem.umu.se |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Benzofurans / analysis* Carbon / chemistry* Chromatography, Liquid / methods Equipment Design Fish Oils / chemistry* Fishes Gas Chromatography-Mass Spectrometry / instrumentation, methods Particle Size Polychlorinated Biphenyls / analysis* Sensitivity and Specificity Tetrachlorodibenzodioxin / analogs & derivatives*, analysis |
| Chemical | |
Reg. No./Substance:
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0/Benzofurans; 0/Fish Oils; 0/Polychlorinated Biphenyls; 0/polychlorodibenzo-4-dioxin; 132-64-9/dibenzofuran; 1746-01-6/Tetrachlorodibenzodioxin; 7440-44-0/Carbon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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