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Purity of potassium hydrogen phthalate, determination with precision coulometric and volumetric titration–A comparison by Sebastian Recknagel; Martin Breitenbach; Joachim Pautz; Detlef Lück is a Chemistry article available to read on EtoBox.

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The mass fraction of potassium hydrogen phthalate (KHP) from a specific batch was certified as an acidimetric standard. Two different analytical methods on a metrological level were used to carry out certification analysis: precision constant current coulometric and volumetric titration with NaOH. It could be shown that with a commercial automatic titration system in combination with a reliable software for the end-point detection it is possible to produce equivalent results with the same accuracy in comparison to a definite method handled by a fundamental apparatus for traceable precision coulometry. Prerequisite for titrations are that a high number of single measurement are applied which are calibrated with a high precision certified reference material.

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Author

Sebastian Recknagel; Martin Breitenbach; Joachim Pautz; Detlef Lück

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

2007

Language

EN

Field

Chemistry (Physical Sciences)