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Titration

Description of method

Titration is a special type of quantitative chemical determination, in which any excess reagent is avoided, so that a perceivable, defined end-point of the reaction is achieved. For this purpose, a reagent solution of precisely known strength (titre) is passed from a burette into the test solution of unknown volume or the dissolved test substance until the constituent of the test substance to be determined has quantitatively reacted with the standard solution. The equivalence point is determined by colour indicators or by the titration curves (e.g. potentiometrically, amperometrically, conductometrically).

Features of titration

High accuracy and reproducibility of the analysis results by using volumetric solutions with concentration assaying by primary standard substances ( RSD: 0.1 - 1 % )

Sample preparation

Solutions of solid samples must be prepared.

Instrumental equipment

Metrohm 716 DMS Titrino; Metrohm 665 Dosimat; pH-Stat-24 control software

Analysis examples

Water determinations in emulsions, precision determination of Ga in GaAs (PhD thesis)

Contact

Frau Dr. S. Willbold Tel.: 02461-61 6063


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