Determination of seven bisphenol analogues in reed and Callitrichaceae by ultra performance liquid chromatography–tandem mass spectrometry

An analytical procedure was developed to simultaneously determine bisphenol S, bisphenol F, bisphenol B, bisphenol A, bisphenol AF, tetrachlorobisphenol A, and tetrabromobisphenol A in reed and Callitrichaceae. Homogenized samples were extracted with acetonitrile and purified using an ENVI™-Carb cartridge followed by an NH2 cartridge. The analytes were separated and quantified by ultra performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS). The recoveries at three fortified levels in reed and Callitrichaceae were 57–108% and 68–106%, respectively, with relative standard deviations of no more than 15% (n = 6). The method limits of quantification and detection for the seven bisphenol analogues were 0.005–0.500 μg/kg and 0.002–0.150 μg/kg, respectively. This method was used to analyze the seven compounds in ten reed and Callitrichaceae samples collected from Zhejiang, China.