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Table 4 Concentrations of three cephalosporin antibiotics in pharmaceutical wastewater samples

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

Sample number Cefadroxil Cefprozil Cefradine
1 18.25 μg/mL N.D N.D
2 N.D 33.74 μg/mL N.D
3 N.D N.D 545.9 μg/mLa
4 N.D N.D N.D
5 N.D N.D N.D
  1. N.D not detected
  2. aThe concentration was obtained by sample dilution (one part sample to three parts pure water)