Comparison of methods employing gas chromatography retention data to determine vapour pressures at 298 K

Photoelectron resonance capture ionization mass spectrometry of fatty acids in olive oil

“…This can arise from several sources. The high vapor pressure of the lighter species [44], such as propanal, can cause the molecule to be preferentially volatilized from the aerosol while in the flow reactor, such that it is never sampled into the mass spectrometer and therefore not measured. Secondly, an ozonolysis product that still contains at least one double bond may undergo subsequent reactions with ozone, leading to lower-molecular-weight compounds which could be lost to volatilization.…”

The relationship between vapour pressure, vaporization enthalpy, and enthalpy of transfer from solution to gas: An extension of the Martin equation

“…Data in table 1 are the natural logarithms of vapour pressure of aliphatic compounds of different functional groups and z (experimental data taken from Koutek et al [7]). All the R 2 values of the ln p i versus z plots are better than 0.9963.…”

“…Vaporization enthalpies and vapour pressures (T = 298.15 K) of many organic compounds have been subjects of considerable interest for chemists, engineers, and environmentalists. Due to the very wide range of vapour pressure of different compounds, different direct and indirect methods have been used [3][4][5][6][7] for its measurement. Among these, the gas chromatographic (g.c.)…”

“…Among these, the gas chromatographic (g.c.) method has widely been practiced for its simplicity, speed, reproducibility, sample size and purity [6][7][8][9][10]. Many modifications of the g.c.…”

“…methods for the determination of 2-fluorotelomer alcohols and reported that the head space method was more accurate (for 2-fluorotelomer alcohols), but it had a draw back that the compound to be determined ought to be relatively pure. Koutek et al [7] pointed out that many modifications had been made for the determination of vapour pressure of environmentally relevant chemicals, all the methods were, to some extent, based on the following equation:…”