Potential Measurements for Selectivity Determinations of Polycarbonate Membranes Bounded by MgCl2Solutions
- 1 June 1986
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 21 (4) , 421-432
- https://doi.org/10.1080/01496398608057172
Abstract
The emf of the cell chloride selective electrode/MgCl2(N 1)/membrane/MgCl2(N 2)/chloride selective electrode, containing a polycarbonate membrane, has been measured at 20, 30, 40, and 50°C. The membranes studied had pore diameters ranging from 5.0 to 0.03 μm, and bounding solutions concentrations vary from 2 × 10−4 to 10−1 equiv/dm3. Apparent transport numbers of cation and permselectivities, deduced from emf values, are given. Results show that polycarbonate membranes are permselective to Mg2+ when the concentration of bounding solutions is low.Keywords
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