Determination of bisphenol-type endocrine disrupting compounds in food-contact recycled-paper materials by focused ultrasonic solid-liquid extraction and ultra performance liquid chromatography-high resolution mass spectrometry

► FUSLE and UPLC-HRMS determination of four endocrine disrupters in paper and cardboard. ► Analytes are bisphenol A, bisphenol F and their diglycidyl ether derivatives. ► Complete extraction in two FUSLE cycles of 5 s and UPLC separation in only 4 min. ► Presence of bisphenol A and F in different food-contact recycled-paper materials. ► Diglycidyl ether derivatives were not found in the analyzed samples.