reagent Pure solution Buspar tablets 10 µg / tablet Spiked urine samples
Taken µgmL-1        found µgmL-1 Recovery% Taken  µgmL-1 found µg mL-1 Recovery% Taken µgmL-1 found µgmL-1 Recovery%
  PA   5 4.93 98.60 5 5.10 102.00 5 4.60 92.00
10 9.96 99.61 10 9.80 98.00 10 9.30 93.00
15 14.6 97.33 15 16.00 106.67 15 14.10 94.00
20 19.86 99.31 20 19.80 99.00 20 19.20 96.00
25 24.8 99.20 25 25.10 100.40 25 24.30 97.20
Mean recovery ± RSD* 98.81 ± 1.1 Mean recovery ± RSD* 101.21 ± 1.3 Mean recovery ± RSD* 94.44  ± 1.55
  AR 10 9.80 98.00 10 10.00 100.00 10 9.60 96.00
20 19.70 98.50 20 19.90 99.50 20 19.00 95.00
30 29.50 98.33 30 31.00 103.33 30 29.10 97.00
40 39.60 99.00 40 40.20 100.50 40 39.20 98.00
50 49.30 98.60 50 49.70 99.40 50 49.10 98.20
Mean recovery ± RSD* 98.48 ± 1.81 Mean recovery ± RSD* 100.55 ± 1.40 Mean recovery ± RSD* 96.84 ± 1.97
  BTB 5 4.98 99.60 5 4.95 99.00 5 4.80 96.00
10 9.97 99.70 10 10.20 102.00 10 9.70 97.00
15 14.81 98.70 15 14.80 98.67 15 14.80 98.67
20 19.84 99.21 20 19.80 99.00 20 19.60 98.00
25 24.70 98.80 25 26.00 104.00 25 24.70 98.80
Mean recovery ± RSD* 99.20 ± 1.6 Mean recovery ± RSD* 100.53± 1.6 Mean recovery ± RSD* 97.69 ± 2.06
    BPR 20 19.80 99.00 20 21.00 105.00 20 19.00 95.00
40 39.70 99.25 40 39.80 99.50 40 39.00 97.50
60 59.52 99.20 60 59.70 99.50 60 59.00 98.33
80 79.14 98.92 80 81.00 101.25 80 78.00 97.50
100 99.00 99.00 100 101.00 101.00 100 98.00 98.00
Mean recovery ± RSD* 99.07 ± 1.10 Mean recovery ± RSD* 101.25 ± 1.79 Mean recovery ± RSD* 97.27± 1.75
Table 4: Spectrophotometric determination of (Bu-HCl)