“…In particular, a careful investigation of the scientific literature on the subject shows how HPLC coupled to different detection systems is the most exploited analytical strategy for this purpose. As far as the identification of new compounds and qualitative profiling is concerned, the most frequently applied detection is represented by medium and high resolution mass spectrometry (MS, MS/MS, and HRMS) [38,50,58,59,70,73,76,79,81,84,85,86,87,88,89,90,91,92,93,94,95,96], while for quantitative targeted purposes, other detection systems have proved to be useful, such as ultraviolet (UV), diode array (DAD) [38,53,67,77,81,88,90,97], and fluorescence detection (FLD) [89,98,99,100]. The high selectivity provided by MS is essential for isomeric compounds, such as bergapten and xanthotoxins.…”