Table 1 Optimization of the PVC membrane composition
From: New potentiometric sensors for methylphenidate detection based on host–guest interaction
No. | Plasticizer (350 mg) | KTPB (mg) | Sensor 1 | Sensor 2 | Sensor 3 | |||
|---|---|---|---|---|---|---|---|---|
Slope | Range | Slope | Range | Slope | Range | |||
1 | DBS | 5 | 50 | 1 × 10−3 to 1 × 10−5 | 45 | 1 × 10−3 to 1 × 10−5 | 47 | 1 × 10−3 to 1 × 10−5 |
2 | DOP | 5 | 59.5 | 1 × 10−3 to 8 × 10−6 | 51.5 | 1 × 10−3 to 8 × 10−6 | 56.5 | 1 × 10−3 to 8 × 10−6 |
3 | o-NOPE | 5 | 59.0 | 1 × 10−3 to 8 × 10−6 | 51.0 | 1 × 10−3 to 8 × 10−6 | 56.5 | 1 × 10−3 to 8 × 10−6 |
4 | DOP | 0 | 37 | 1 × 10−3 to 2 × 10−5 | 35 | 1 × 10−3 to 2 × 10−5 | 40 | 1 × 10−3 to 2 × 10−5 |
5 | DOP | 1 | 50 | 1 × 10−3 to 2 × 10−5 | 47 | 1 × 10−3 to 2 × 10−5 | 48 | 1 × 10−3 to 2 × 10−5 |
6 | DOP | 3 | 53 | 1 × 10−3 to 1 × 10−5 | 49 | 1 × 10−3 to 1 × 10−5 | 52.5 | 1 × 10−3 to 1 × 10−5 |
7 | DOP | 5 | 59 | 1 × 10−3 to 8 × 10−6 | 51.5 | 1 × 10−3 to 8 × 10−6 | 56.5 | 1 × 10−3 to 8 × 10−6 |
8 | DOP | 7 | 59 | 1 × 10−3 to 8 × 10−5 | 51.5 | 1 × 10−3 to 8 × 10−5 | 56.5 | 1 × 10−3 to 8 × 10−5 |