| 
      
        | No. | IR Absorption | St. Deviation | Removal 
          Percent (%) |  
        | 1 | 0.4100 | 1.0 | 20.14 |  
        | 2 | 0.2410 | 1.0 | 57.94 |  
        | 3 | 0.2450 | 1.0 | 57.04 |  
        | 4 | 0.3680 | 2.0 | 29.54 |  
        | 5 | 0.3140 | 2.0 | 41.62 |  
        | 6 | 0.2460 | 2.0 | 56.82 |  
        | 7 | 0.2710 | 2.0 | 51.24 |  
        | 8 | 0.2575 | 0.5 | 54.24 |  
        | 9 | 0.3515 | 1.5 | 33.22 |  
        | 10 | 0.2390 | 1.0 | 58.38 |  
        | 11 | 0.3590 | 2.0 | 31.56 |  
        | 12 | 0.2675 | 0.5 | 52.02 |  
        | 13 | 0.2685 | 1.5 | 51.78 |  
        | 14 | 0.2455 | 0.5 | 56.94 |  
        | 15 | 0.3710 | 2.0 | 28.86 |  
        | 16 | 0.2600 | 1.0 | 53.70 |  
        | 17 | 0.3595 | 1.5 | 31.44 |  
        | 18 | 0.2520 | 0.0 | 55.48 |  
        | O.S.a | 0.4440 |  0.5 | 12.54 |  a: Blank sample
 |