Determination of Bisphenol A in Prepackaged Fruits and Vegetables by Metal-Organic Framework Enrichment and High-Performance Liquid Chromatography
Objective:To establish a method for the determination of bisphenol A(BPA)in pre-packaged fruits and vegetables using metal-organic framework enrichment and high-performance liquid chromatography(HPLC).Method:Based on the QuEChERS sample preparation technique,the extraction and purification conditions were optimized.Metal organic frameworks were used to enrich BPA from fruit and vegetable samples,which were then analyzed by HPLC.Result:Under optimized conditions,BPA exhibited good linearity in the range of 10～1 000 μg·L-1,with a correlation coefficient(R2)greater than 0.999 0,a limit of detection of 0.1 μg·kg-1,and a limit of quantification of 0.3 μg·kg-1.The recovery rate of different fruit and vegetable matrices ranged from 80.5%to 105.2%,and the relative standard deviation was 9.6%.The effect of different fruit and vegetable matrices on quantitative detection was not significant(|ME|＜10%).Conclusion:The approach exhibits remarkable sensitivity,does not require internal standards or solid-phase extraction devices,is simple to operate,and can meet the detection requirements of BPA in fruits and vegetables,providing an economical and convenient new approach for the detection of BPA in food.
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