Figure 4From: Immobilization of tris(2 pyridyl) methylamine in a PVC-Membrane Sensor and Characterization of the Membrane PropertiesThe FT-IR spectra of the membrane PVC sensor based on tpm ionophore in different states: (a) pure tpm, (b) blank membrane, before (c), after (d) destocking in 1.0 × 10-3 M TiCl 3 solution for 24 hours.Back to article page