Berg, R.
(2015),
Time dependence in “static” measurements of vapor pressure, Journal of Chemical and Engineering Data, [online], https://doi.org/10.1021/acs.jced.5b00752
(Accessed December 13, 2024)
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Time dependence in static measurements of vapor pressure
Published
Author(s)
Abstract
The static method for measuring vapor pressure assumes that the sample is pure and that its temperature is steady and uniform. In practice, the measured pressure may be time dependent due to evaporative cooling after pumping on the sample, transpiration of the sample in a temperature gradient, or diffusion of an impurity out of the sample. An impurity cannot be avoided if the sample is decomposing. This article discusses causes of time dependence, and it includes an analysis that obtained the vapor pressure from the time-dependent pressure of a decomposing sample.Citation
Journal of Chemical and Engineering Data
Volume
60
Pub Type
Journals
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Keywords
cyclic pumping, decomposition, diffusion, evaporative cooling, time-dependent pressure, transpiration, vapor pressure
Citation
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Created November 17, 2015, Updated November 10, 2018