MSFig. 1. Summary of the procedural performance of the integrated screening method applied to the experiment with initial concentration of 500 g L−1. In step I, numbers refer to the peaks remaining after each step; in step II, numbers refer to the peak intensity values for each entry; in step III, numbers before and after the slash refer to negative and positive ionization mode, respectively, numbers in the square brackets refer to the same compounds detected in the opposite ionization mode, numbersin round brackets refer to fragments and/or adducts, an example is shown in thefigure.