fig4

Figure 4. Mass losses (%) of different PPCPs in Milli-Q water after filtration using syringe filters with different materials and pore sizes (A: TC antibiotics; B: SA antibiotics; C: QL antibiotics; D: non-antibiotics; E: MA antibiotics). **Indicates that mass losses in the two types of syringe filters are significantly different by U-test at the 0.05 level; *indicates that the difference is not significant under the same condition. PPCP: Pharmaceutical and personal care products.