Review of Polarography
Online ISSN : 1884-7692
Print ISSN : 0034-6691
ISSN-L : 0034-6691
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Volume 63, Issue 2
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  • The Principle of Water-Content Determination by Karl Fischer Titration
    Toshiyuki Osakai
    2017 Volume 63 Issue 2 Pages 101-107
    Published: October 10, 2017
    Released on J-STAGE: October 12, 2017
    DOIhttps://doi.org/10.5189/revpolarography.63.101
    JOURNAL FREE ACCESS
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    In 1935, Karl Fischer (KF) proposed a titration method for water content determination. Since then, KF titration has been extensively applied in the determination of water in various samples, including liquids, solids, and gases. The present article describes the reaction mechanism, the two different methods (i.e., volumetry and coulometry), and their instruments and advantages/disadvantages. As an example, an application of KF titration is described in the study of the coextraction of water with hydrophilic ions to water-immiscible organic solvents (e.g., nitrobenzene).

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