Quick, Easy, Cheap, Effective, Rugged, and Safe Method Followed by Ionic Liquid-Dispersive Liquid–Liquid Microextraction for the Determination of Trace Amount of Bisphenol A in Canned Foods

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• 作者：Mohammad Faraji ; Mahsa Noorani ; Banafshe Nasiri Sahneh
• 关键词：Bisphenol A ; QuEChERS method ; Ionic liquid ; dispersive liquid–liquid microextraction ; Canned foods ; High ; performance liquid chromatography
• 刊名：Food Analytical Methods
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：10
• 期：3
• 页码：764-772
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Food Science; Chemistry/Food Science, general; Microbiology; Analytical Chemistry;
• 出版者：Springer US
• ISSN：1936-976X
• 卷排序：10

文摘

Combination of the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method with ionic liquid-dispersive liquid–liquid microextraction (QuEChERS-IL-DLLME) was developed as an extraction methodology to determine bisphenol A (BPA) in various canned food samples prior to high-performance liquid chromatography ultraviolet detection (HPLC-UV). The potential variables affecting the microextraction recovery were considered in the optimization process. Obtained results showed that 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C₆mim][Tf₂N]) is a better extraction solvent compared with 1-hexyl-3-methylimidazolium hexafluorophosphate ([C₆mim][PF₆]) and is more compatible with RP-HPLC. Under the optimum conditions, the method yielded a linear calibration curve ranging from 1.0 to 500 μL−1 with a determination coefficient (R2) of 0.9993. Enrichment factor for BPA was 98, and limit of detection was 0.1 μg L−1. The relative standard deviation percent (RSD%) for the intra-day and inter-day extraction and determination at 2.0, 20, and 200 μg L−1 levels of BPA was less than 7.2 % (n = 6) and 9.7 % (n = 6), respectively. Finally, the proposed method was successfully applied for the extraction, cleanup, preconcentration, and determination of the BPA in different canned food samples, and satisfactory results were obtained (relative recovery ≥90 %).