Research Article
Tin(II) Selective PVC Membrane Electrode Based on Salicylaldehyde Thiosemicarbazone as an Ionophore
Table 2
Composition of PVC membrane of (STSC) and performance characteristics of Sn2+ selective sensors based on them.
| | S. no. | PVC | Plasticizer | Ionophore | Excluder NaTPB | Slope (mv/decade) | Linear range |
| | 1 | 28 | 67 (TBP) | 0 | 5 | 8.9 | 1 × 10−3 to 1 × 10−6 | | 2 | 28 | 58 (TBP) | 8 | 5 | 29.2 | 1 × 10−2 to 1 × 10−8 | | 3 | 28 | 57 (TBP) | 5 | 5 | 35.7 | 1 × 10−3 to 1 × 10−7 | | 4 | 28 | 59 (TBP) | 7 | 5 | 22.8 | 1 × 10−2 to 1 × 10−5 | | 6 | 28 | 57 (DOP) | 5 | 5 | 18.3 | 1 × 10−3 to 1 × 10−5 | | 7 | 28 | 58 (DOP) | 4 | 5 | 33.4 | 1 × 10−2 to 1 × 10−4 | | 8 | 28 | 59 (DOP) | 3 | 5 | 25.7 | 1 × 10−2 to 1 × 10−5 |
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