However, the mass tolerance based on the precursor peak width (i.e., 0.0334/2 = 0.0167 Da) was too small to match this fragment with the library entry (i.e, 167.034 -167.004 ¿ 0.0167 m/z). Overall, this showed the post-processing capabilities of the toolbox with regard to the suspect screening and identification, which are two workflows that can complement each other in NTA. Finally, the study by Singh et. al. reported a few frequently detected chemicals. One of those chemicals was the antihypertensive drugs sotalol (ZBMZVLHSJCTVON-UHFFFAOYSA-N ), for which a overall higher concentration was found in 2019 compared to 2020. Even though no quantification has been performed with the showcase, an overall higher intensity for sotalol in 2019 was found via our retrospective analysis of the data and can be seen in figure .