“…In the last few years, Ultra-High Performance Liquid chromatography (UHPLC) coupled to tandem MS (MS/MS), or to high-resolution MS (HRMS), have been widely used for accurate quantification of organic micropollutants ( Boix et al, 2014 ;Gracia-Lor et al, 2011 ), or for widescope screening ( Guardian et al, 2021 ;Hernández et al, 2015bHernández et al, , 2015Llorca et al, 2021 ;Lotfi Khatoonabadi et al, 2021 ), respectively. The latter allows the full-data acquisition of all the ionizable compounds present in the sample, enabling the possibility to perform target, suspect or non-target screening, also in a retrospective way ( Choi et al, 2021 ;Hollender et al, 2017 ;Menger et al, 2020 ). The accurate-mass full-spectrum acquisition is highly valuable for the identification of suspect compounds, such as metabolites and transformation products, as there are not analytical reference standards available for many of them, and therefore identification must be based on accurate mass fragmentation ( Boix et al, 2016a( Boix et al, , 2016, among other MS data.…”