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Determination of vapour pressure curves by automated headspace analysis

Bestimmung von Dampfdruckkurven durch automatische Dampfraumanalyse

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Zusammenfassung

Die Anwendung der Dampfraumanalysen-Technik zur Ermittlung von Dampfdruckkurven wird beschrieben, an den Beispielen n-Octan, Benzol, Bis-(2-chlorethyl)sulfid und o-Nitrophenol dargestellt und mit Literaturdaten verglichen. Das Verfahren arbeitet zuverlässig bis hinunter zu Dampfdrucken von etwa 1 Pa und erlaubt die Erstellung einer Dampfdruckkurve innerhalb eines Arbeitstages.

Summary

The application of headspace analysis techniques for the evaluation of vapour pressure curves is described. As representative examples the vapour pressure curves of n-octane, benzene, bis-(2-chloroethyl)-sulphide and 2-nitrophenol are determined and compared with data from literature. The method gives reliable results down to vapour pressures of about 1 Pa and allows the evaluation of a vapour pressure curve within one working day or less.

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Schoene, K., Steinhanses, J. Determination of vapour pressure curves by automated headspace analysis. Z. Anal. Chem. 309, 198–200 (1981). https://doi.org/10.1007/BF00488649

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  • DOI: https://doi.org/10.1007/BF00488649

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