| 
      
        | Analyte | Spiked level (μg.kg–1)
 | Intra-day(RSD, n=6) 
          (%) | Inter-day (RSD,n=6) (%)
 |  
        | Sulfadiazine | 10 | 0.5 | 0.7 |  
        | 20 | 0.8 | 0.9 |  
        | 50 | 0.8 | 1.0 |  
        | Sulfamerazine | 10 | 0.9 | 1.3 |  
        | 20 | 1.1 | 1.1 |  
        | 50 | 0.6 | 1.3 |  
        | Sulfametoxydiazine | 10 | 0.3 | 0.9 |  
        | 20 | 0.5 | 0.7 |  
        | 50 | 0.3 | 1.0 |  
        | Sarafloxacin | 5 | 1.2 | 1.7 |  
        | 10 | 1.5 | 1.8 |  
        | 25 | 1.1 | 1.5 |  |