Research Article

Preparation, Characterization, and Analytical Application of Ramipril Membrane-Based Ion-Selective Electrode

Table 3

The accuracy and reliability of result obtained with ramipril PVC matrix membrane electrode.

SampleConcentration, mol L−1Ramipril-phosphomolibdateRamipril-teraphenylborate

FoundRecovery %FoundRecovery %

11 × 10−30.95 × 10−395.00.95 × 10−395.0
22 × 10−31.87 × 10−393.51.90 × 10−395.0
33 × 10−32.91 × 10−397.0 2.92 × 10−397.3
44 × 10−33.94 × 10−398.53.94 × 10−398.5
55 × 10−34.98 × 10−399.64.93 × 10−398.6

Averagere covery96.796.9