Fig. 2. Three-dimensional extracted ion chromatograms (XICs) integrated with incubation time and mass spectra for furosemide and saluamine in the experiment with500 g L−1initial concentration: (a) XICs of the parent compound furosemide (RT: 3.55 min) and its TP saluamine (RT: 2.27 min) at 5 incubation time points; (b) mass spectrum of saluamine; (c) mass spectrum of furosemide.