A Simple Fluorescence Spectroscopic Approach for Simultaneous and Rapid Detection of Four Polycyclic Aromatic Hydrocarbons (PAH4) in Vegetable Oils

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• 作者：Yi-Hong Liu ; Ping-Ping Wu ; Qian Liu ; He-Dong Luo ; Shuo-Hui Cao…
• 关键词：Synchronous fluorescence spectroscopy ; Vegetable oils ; Chrysene ; Benzo(a)anthracene ; Benzo(a)pyrene ; Benzo(b)fluoranthene
• 刊名：Food Analytical Methods
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：9
• 期：11
• 页码：3209-3217
• 全文大小：1,520 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Food Science
  Chemistry
  Microbiology
  Analytical Chemistry
  
• 出版者：Springer New York
• ISSN：1936-976X
• 卷排序：9

文摘

Based on the conclusions of the European Food Safety Authority (EFSA), the four polycyclic aromatic hydrocarbons (PAH4) chrysene (Chr), benzo(a)anthracene (BaA), benzo(a)pyrene (BaP), and benzo(b)fluoranthene (BbF) are new markers for the occurrence of PAHs in food. Vegetable oils are extremely easily contaminated by PAHs, due to the raw material pollution and the imperfections of processing techniques. Therefore, it is of great importance to establish an efficient method for the rapid determination of PAH4 in vegetable oils. In this research, second-derivative nonlinear variable-angle-matrix isopotential synchronous fluorescence spectroscopic approach has been proposed for the simultaneous and rapid determination of PAH4 in vegetable oils with ultrasonic-assisted extraction. This method is capable of resolving the spectra of these four PAHs well. The limits of detection (LODs) for Chr, BaA, BaP, and BbF were 13.0, 8.64, 0.16, and 7.68 μg kg−1, respectively. The recoveries in various oil samples for Chr, BaA, BaP, and BbF were 86.2 ± 15.3, 93.8 ± 11.7, 93.9 ± 12.1, and 94.3 ± 7.4 %, respectively, at the spiked levels of 10∼400 μg kg−1. The relative standard deviations (RSDs) achieved for Chr, BaA, BaP, and BbF were 3.0, 8.4, 6.3, and 7.2 %, respectively. The established method is simple, economical, and reliable, as well as provides an attractive alternative for the simultaneous and rapid determination of PAH4 in vegetable oils.