Method for the determination of methanol in binary methanol-water mixtures by use of ion-selective electrodes
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 103 (1231) , 1046-1052
- https://doi.org/10.1039/an9780301046
Abstract
For a given concentration of indicator ion X (X = F–, Cl–, Br–, I–, OH–, S2–, Ag+ or H+), the systematic change of cell potential, E, with variation in the concentration of methanol provides a graphical method for the rapid determination of methanol in methanol-water mixtures. Readings obtained by direct potentiometry show good reproducibility and stability. In 99.0–99.9%m/m methanol, containing 10–2 M hydrochloric acid, trace amounts of water can be determined accurately owing to a potential “anomaly.”Keywords
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