Additional file 1: of Removal and tracing of cephalosporins in industrial wastewater by SPE-HPLC: optimization of adsorption kinetics on mesoporous silica nanoparticles

Figure S1. TEM micrograph of mesoporous silica nanoparticles. Figure S2. Chromatogram of cefadroxil, cefprozil and cefadrine on using (a) phosphate buffer: methanol (80:20) as a mobile phase and cephalexin as internal standard and (b) acetate buffer acetonitrile: methanol (78:9:13). Figure S3. Percentage of treatment by adsorption vs the sample number for (a) cefadroxil, (b) cefprozil and (c) cefadrine. Figure S4. Normal plot of residuals for the factorial design, (a) for cefadroxil, (b) cefprozil and (c) cefradine percentage treatment. Figure S5. Plot of residuals vs predicted response for factorial design, (a) percentage of treatment of cefadroxil, (b) cefprozil and (c) cefadrine. (DOCX 243 kb)