Abstract
In this study, dispersive liquid-liquid microextraction coupled with ultra-high-performance liquid chromatography-tandem mass spectrometry was developed for the analysis of five representative organophosphate esters (OPEs) in wine samples. Under optimized conditions, the proposed method resulted in good linearity (R2>0.9933) over the range of 0.1-100μgL-1, with limits of detection (LODs, S/N=3) and quantification (LOQs, S/N=10) in the ranges of 0.48-18.8ngL-1 and 1.58-62.5ngL-1, respectively. Inter- and intra-assay precisions of RSD% ranged from 3.21% to 6.13% and from 1.69% to 7.63%, respectively. The spiked recoveries of target OPEs from white wine, red wine, and beer samples were in the ranges of 80-122%, 76-120%, and 76-110%, respectively, at two different concentration levels. The total concentrations of five OPEs found in white wine, red wine, and beer samples were in the ranges of 0.29-0.85μgL-1, 1.00-3.05μgL-1, and 0.86-1.47μgL-1, respectively.
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