Table 4: Standard addition method for the determination of PZT in drug formulations.

MethodsSelgon tabletsSelgon drops
Taken ( g mL−1)Added ( g mL−1)Found ( g mL−1)Recoverya (%)Taken ( g mL−1)Added ( g mL−1)Found ( g mL−1)Recoverya (%)

0.50.99999.900.51.001100.10
1.01.49399.541.01.502100.13
A0.51.52.002100.100.51.51.99199.55
2.02.49299.682.02.48799.48
2.52.99899.932.52.99399.77

0.50.99199.100.51.005100.50
1.01.48398.871.01.49099.33
B0.52.02.516100.640.52.02.47699.04
3.03.511100.313.03.507100.20
4.04.47599.444.04.48799.71

1.01.99399.651.02.005100.25
2.02.97299.072.02.96598.83
C1.03.04.004100.101.03.03.94598.63
5.05.96499.405.06.01100.17
6.07.008100.116.06.93799.10

0.51.003100.300.50.99799.70
1.01.47898.531.01.49099.33
D0.51.52.006100.30.51.51.98599.25
2.02.49399.722.02.48099.20
3.03.48599.573.03.504100.10

0.50.99699.600.50.99899.80
1.01.48599.001.01.49099.33
E0.51.51.99599.750.51.52.006100.30
2.02.48599.402.02.505100.20
2.53.005100.172.53.01100.33

Average of six determinations.