Abstract
The distribution constants of acetone in different chromatographic sorbent-nitrogen systems were determined by direct measurement of sorption equilibria at gas-phase concentrations of acetone ranging from tens of ppb (10°) to hundreds of ppm. Tenax GC, Porapaks P and Q, Apiezon K and silicone oil QF-1 were employed as sorbents. With Tenax GC and Porapak P, the sorption isotherms were almost linear up to concentrations of about 4 ppm of acetone in the gaseous phase, whereas with the other sorbents the isotherms were non-linear over the whole range of concentrations investigated. With the Tenax GC and Porapak P systems, the distribution constants determined at concentrations corresponding to the linear sections of the corresponding isotherms agreed with those calculated from gas chromatographic retention data within about 15% of the values determined.
Published Version
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