Vapor pressure measurement by gas saturation for mixture

Details Vapor pressure measurement by gas saturation for mixture Vapor pressure measurement by gas saturation for mixture

1992-09-24

1994-07-12

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Vapor pressure

73 2901, 73 6141, G01N 700

Patent

active

053277791

ABSTRACT:
Disclosed herein is an apparatus and process for determining the vapor pressure of materials in a mixture at relatively low vapor pressures by a gas saturation procedure. The process comprises passing an inert gas over a sampled material at a controlled flow rate to create a vapor of the sampled materials that may be collected and analyzed. Of particular importance, this method and apparatus provides a means of collecting vaporized samples over an extended period of time and, therefore, allows even minor components of mixtures to be considered in the final vapor pressure analysis. The apparatus also includes a means for determining whether sampled material has progressed as vapor beyond the means of collecting the sampled material.

REFERENCES:
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patent: 3527085 (1970-09-01), Silas et al.
patent: 3901062 (1975-08-01), Lynch et al.
patent: 4395903 (1983-08-01), Gouw
patent: 4928515 (1990-05-01), Rosaen
Environmental Protection Agency Statute 40 CFR, Ch.1 (Jul. 1, 1991 Edition), .sctn.796.1950.

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