Table 2 Comparison of analytical characteristics of biosensors based on urease adsorbed on silicalite-1-covered transducers
From: Nanosized zeolites as a perspective material for conductometric biosensors creation
Biosensor characteristic | Biosensors based on transducers covered via spin coating | Biosensors based on transducers covered via drop coating |
|---|---|---|
Time of steady-state response | 1 min | 1.5 to 2 min |
Sensitivity to urea, μS/mM | 700 to 860 | 1,100 to 1,500 |
Linear range, μM | 10 to 1,000 | 2 to 700 |
Limit of urea detection, μM | 5 to 10 | 1 to 2 |
Reproducibility of responses during working day (RSD) | 3% to 8% | 2% to 4% |
Reproducibility of biosensor preparation (RSD of responses of different biosensors) | 12% to 15% | 20% to 25% |