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| SFIL | Absorbance [AU] | [In]/(%) | [InH+]/(%) | H 0 |
|---|---|---|---|---|
| p-Nitroanilinea | 0.132 | 100 | 0 | |
| [PSmim][HSO4] | 0.088 | 66.7 | 33.3 | 1.29 |
| [PSPy][HSO4] | 0.091 | 68.9 | 31.1 | 1.34 |
| [PSmim][pTSA] | 0.099 | 75.0 | 25.0 | 1.47 |
| [PSPy][pTSA] | 0.101 | 76.5 | 23.5 | 1.50 |
Indicator: p-nitroaniline: 0.01 mmol L−1, SFIL: 0.125 mmol L−1.
