High-Precision Gas Chromatography
- 1 January 1971
- journal article
- Published by Oxford University Press (OUP) in Journal of Chromatographic Science
- Vol. 9 (1) , 6-10
- https://doi.org/10.1093/chromsci/9.1.6
Abstract
A high-precision chromatograph has been used for determination of differential thermodynamic quantities of two gas-liquid systems. Individual α values and consequently Δ(ΔH°) were determined with a precision of ±0.02%. The precision in the measurement of Δ(ΔG°) was ±0.2%. These values represent an order of magnitude improvement over the best previously reported data. Heats of adsorption of hydrocarbons on carbon black and silica gel were also determined with a precision of ±0.6%.Keywords
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