From: New potentiometric sensors for methylphenidate detection based on host–guest interaction
Parameters | Sensor 1 | Sensor 2 | Sensor 3 | |||
---|---|---|---|---|---|---|
Recovery, % | RSD, % | Recovery, % | RSD, % | Recovery, % | RSD, % | |
Operators 1 | 98.52 | 2.2 | 98.0 | 2.16 | 99.24 | 2.45 |
2 | 98.33 | 2.3 | 98.5 | 3.34 | 99.21 | 2.75 |
Instrument 1a | 98.51 | 2.3 | 98.0 | 2.53 | 99.12 | 2.62 |
2 | 98.41 | 2.4 | 97.5 | 3.64 | 98.51 | 2.53 |
Change in day | ||||||
Intra-day | 100.74 | 2.38 | 100.26 | 2.18 | 101.33 | 2.21 |
Inter-day | 98.33 | 2.5 | 97.1 | 2.4 | 99.23 | 2.7 |
Life time during | ||||||
After 8 weeks | 97.5 | 3.9 | 97.0 | 3.8 | 98.0 | 3.96 |