Linearity range of Gran plots for the end-point in potentiometric titrations
- 1 January 1989
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 114 (4) , 463-470
- https://doi.org/10.1039/an9891400463
Abstract
Simple criteria and procedures to assess which part of a potentiometric titration curve can be used to obtain an appreciably linear Gran plot and an accurate extrapolation to the equivalence volume are discussed for one-step precipitation, complexometric, redox and acid-base titrations. Equations were derived for calculating the limiting values of the experimental parameters that prevent titration errors higher than an assigned value.Keywords
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