| Use of ionic liquid aggregates of 1-hexadecyl-3-butyl imidazolium bromide in a focused-microwave assisted extraction method followed by high-performance liquid chromatography with ultraviolet and fluorescence detection to determine the 15+1 EU priority PAHs in toasted cereals ("gofios"). | |
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MedLine Citation:
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PMID: 21726759 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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A focused-microwave assisted extraction method using aggregates of the ionic liquid (IL) 1-hexadecyl-3-butylimidazolium bromide (HDBIm-Br) followed by high-performance liquid chromatography (HPLC) with ultraviolet (UV) detection and single-channel fluorescence detection (FLD) has been developed for the determination of polycyclic aromatic hydrocarbons (PAHs) in toasted cereals ("gofios") of different nature (wheat, barley, rye, and maize corn) from the Canary Islands, Spain. The optimized HPLC-UV-vis/single-channel FLD method takes 40min for the chromatographic run with limits of detection varying between 0.02 and 4.01ngmL(-1) for the fluorescent PAHs from the European Union (EU) priority list in foods, and 20.5ngmL(-1) for the non-fluorescent PAH cyclopenta[c,d]pyrene (CPP). The optimized microwave step presented extractions recoveries ranging from 70.1 to 109% and precision values lower than 12.6% (as relative standard deviation), using an extraction time of 14min. The extraction method also utilizes low amounts of sample (0.1g), and low amounts of IL (77mg), avoiding completely the use of organic solvents. |
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Authors:
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Mónica Germán-Hernández; Verónica Pino; Jared L Anderson; Ana M Afonso |
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Publication Detail:
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Type: Journal Article Date: 2011-05-31 |
Journal Detail:
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Title: Talanta Volume: 85 ISSN: 1873-3573 ISO Abbreviation: Talanta Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-07-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 1199-206 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Elsevier B.V. All rights reserved. |
Affiliation:
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Departamento de Química Analítica, Nutrición y Bromatología, Universidad de La Laguna (ULL), La Laguna (Tenerife), 38206, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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