Analyte Spiked level (μg.kg–1) Pork Chicken Recoveries (%) RSD(n=6) (%) Recoveries (%) RSD(n=6 ) (%) Sulfadiazine 10 104 0.6 108 0.5 20 106 0.5 104 0.8 50 97 0.9 103 0.8 100 99 0.8 96 0.8 Sulfamerazine 10 92 1.0 92 0.9 20 96 0.7 95 1.1 50 98 0.9 96 0.6 100 98 0.8 98 0.7 Sulfametoxydiazine 10 93 0.3 92 0.3 20 95 0.4 90 0.5 50 96 0.6 95 0.3 100 100 0.5 97 0.4 Sarafloxacin 5 90 0.9 89 1.2 10 92 1.2 85 1.5 50 88 1.0 91 1.1 100 98 0.5 97 0.7

Table 3: Determination of the SAs and sarafloxacin in pork and chicken muscle spiked at three concentation levels for each analyte.