Detection of Veterinary Antimicrobial Residues in Milk through Near-Infrared Absorption Spectroscopy

Figure 4

Score plot of statistical analysis (PCA) for average values of samples: pure enrofloxacin (ENR), pure terramycin (TER), pure penicillin (PEN), genuine milk (GEN), milk-enrofloxacin and milk-terramycin in 100 μg/L each (EN100 and TE100), and milk-penicillin in 4 μg/L.