Trends and Strategies for Quantitative Analysis of PCBs in Foods | ||||
| Egyptian Journal of Chemistry | ||||
| Article 35, Volume 63, Issue 10, October 2020, Page 3961-3974 PDF (700.05 K) | ||||
| Document Type: Review Articles | ||||
| DOI: 10.21608/ejchem.2020.26025.2519 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ahmed A. El-Kady   1; Tatsuya Kunisue 2
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| 1National Research Centre, Food Toxicology & Contaminants Department | ||||
| 2Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama-shi, Ehime, 790-8577, Japan | ||||
| Abstract | ||||
| Food matrices are naturally complex and many ingredients such as lipids, proteins, pigments and others are co-extracted with PCBs. So, reliable and effective analytical techniques are needed to determine PCBs in foodstuffs at low concentration. This review is exploring and summarizes the current available techniques for extraction, clean-up, and separation techniques to quantify the PCBs in different foods. Several extraction approaches have been improved to overcome the issues associated with regular techniques involves large amount of solvent and time consuming. Accelerated solvent extraction is a promising and effective extraction technique using reasonable amount of solvents. Acidified silica gel alone or in combination with alumina is succeeded to purify most extract matrices. Besides, gel permission chromatography is widely used to eliminate large size molecules and other co-extracted impurities. As a reference technique GC-HRMS is the most effective technique for quantification of dioxins and dioxin-like PCBs. As alternative techniques, GC coupling with tandem MS is optimized to analysis dioxin and PCBs in foodstuffs and represent a cost effectiveness technique compared to GC-HRMS. GCxGC-HRTOF-MS is evaluated and validated to examine dl-PCBs and indicator PCBs and the obtained results were satisfactory well equivalent to those results obtained by GC-HRMS. | ||||
| Keywords | ||||
| PCBs; foodstuffs; extraction; clean-up; instrumentation | ||||
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