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Abstract: Dummy molecularly imprinted polymer (DMIP) was prepared towards bisphenol S and bisphenol F employing bisphenol A as a dummy template. Liquid chromatography with UV and fluorescence detection (LC-UV/FLD) was used for the separation and quantification of these analytes. The maximum adsorption capacity of DMIP was 20.9 mg g-1 and 18.6 mg g-1 for BPS and BPF, respectively. By applying solid phase extraction with DMIP prior to LC-UV/FLD, the limits of detections achieved in food samples can be lowered to 0.5 ng g-1 for BPF and 5 ng g-1 for BPS. Only 5 mg of DMIP sorbent was sufficient to achieve good recoveries (71-113%) and precision (RSD 0.1-3.2%, n = 3) for analyzed liquid food samples spiked at two concentration levels 0.25 mg L-1 and 0.40 mg L-1. For preconcentrated pineapple extract spiked with 0.5 mg L-1 of both analytes, also very good recovery was obtained (89% for BPS and 99% for BPF), significantly higher than for conventional SPE cartridges such as Oasis HLB and Affinimip®. The analytical characterization of the proposed method makes it suitable for monitoring programs, intended for the assessment of human exposure to bisphenol S in food samples, without using much expensive mass spectrometry detection
Template and target information: dummy template, bisphenol A, BPA, bisphenol S, BPS, bisphenol F, BPF
Author keywords: Dummy molecularly imprinted polymers (DMIP), Bisphenol S, Bisphenol F, HPLC analysis, Food samples