Karl Fischer titration method and the Karl Fischer titrator

摘要

By using a reverse coulometric titration, back titration measurements, the titer can be. In the presence of iodine in a solution including the electrolytic electrode titration flask was filled to the titration flask, by back coulometric titration, the working electrode of an electrolytic electrode, thereby to generate the iodide ions from the iodide. If the solution is a dehydrating solvent containing a Karl Fischer reagent used for volumetric titration, it is possible to determine the titer by the inverse coulometric titration. Alternatively, the results of coulometric titration in a coulometric titration method, when it is generating liquid iodine remains, the solution seeks moisture contained in the sample and the quantity of electricity by coulometric titration, the amount of electricity by reverse coulometric titration. In addition, dropwise a result of the Karl Fischer reagent in volumetric titration, if it is generated liquid iodine remains, than the quantity of electricity by the reverse coulometric titration dropwise amount of Karl Fischer reagent, the solution has been introduced into the titration flask the amount of water contained in the sample can be obtained.