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首页> 外文期刊>RSC Advances >Simultaneous extraction of bisphenol A and tetrabromobisphenol A from milk by microwave-assisted ionic liquid microextraction
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Simultaneous extraction of bisphenol A and tetrabromobisphenol A from milk by microwave-assisted ionic liquid microextraction

机译：微波辅助离子液体微萃取同时从牛奶中提取双酚A和四溴双酚A

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摘要

Considering bisphenol A (BPA) and tetrabromobisphenol-A (TBBPA) are ubiquitous environmental pollutants and widely manufactured into packaging materials, foodstuffs may be polluted by BPA and TBBPA. Additionally, there are very limited analytical methods for determining TBBPA in commercial milk samples. In this study, a rapid, simple and efficient method based on microwave-assisted ionic liquid microextraction (MAILME) combined with high-performance liquid chromatography (HPLC) was first applied to the simultaneous analysis of BPA and TBBPA in commercial milk samples. To achieve the optimum extraction performance, the experimental parameters of the MAILME, including type and amount of ionic liquid, microwave power, extraction time, pH and salt concentration in the sample, were evaluated and optimized. Under the optimum conditions, the detection limits were 0.01 and 0.02 mu g L-1, and the quantification limits were 0.03 and 0.05 mu g L-1 for BPA and TBBPA, respectively. The proposed method had good repeatability and reproducibility with RSDs lower than 5.6%. The recoveries of the analytes in the aged milk samples varied from 79.8 to 97.3%. The proposed method has been applied successfully to the determination of BPA and TBBPA in commercial milk samples with recoveries ranging from 78.2 to 99.8%. Compared with the other previous methods, the proposed method did not need to remove the fats and proteins in the milk, which made the sample pretreatment simple and rapid (5.0 min). And it also avoided the use of organic solvents. The proposed approach provides a new and promising alternative for simultaneously determining trace amounts of BPA and TBBPA in commercial milk samples or other similar samples.
机译：考虑到双酚A（BPA）和四溴双酚A（TBBPA）是普遍存在的环境污染物，已广泛制成包装材料，因此食品可能会被BPA和TBBPA污染。另外，用于测定商业牛奶样品中TBBPA的分析方法非常有限。在这项研究中，基于微波辅助离子液体微萃取（MAILME）结合高效液相色谱（HPLC）的快速，简单，有效的方法首次应用于商业牛奶样品中BPA和TBBPA的同时分析。为了获得最佳的萃取性能，评估并优化了MAILME的实验参数，包括离子液体的类型和量，微波功率，萃取时间，pH和盐浓度。在最佳条件下，BPA和TBBPA的检出限分别为0.01和0.02μg L-1，定量限分别为0.03和0.05μg L-1。该方法具有良好的重复性和重现性，相对标准偏差低于5.6％。老化的牛奶样品中分析物的回收率从79.8％到97.3％不等。该方法已成功应用于商业牛奶样品中双酚A和六溴联苯的测定，回收率在78.2％至99.8％之间。与其他以前的方法相比，该方法不需要去除牛奶中的脂肪和蛋白质，从而使样品的预处理简单而快速（5.0分钟）。并且还避免了使用有机溶剂。所提出的方法为同时测定商业牛奶样品或其他类似样品中痕量的BPA和TBBPA提供了一种新的有希望的替代方法。

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