Sample Profiles and Temperature Transients in Preparative Gas Chromatography

Gas chromatographic column systems exhibiting temperature independence of solute retention

“…Figure 15 shows plots of data for benzene elution from squalane and from 25 mole % oleic acid-stearic acid columns according to these equations and these illustrate the excellent linearity of representation. The singular advantage of this finding is that, following the earlier procedure, we derive from these equations the compensating condition, Wi/Wi --c'/a' (10) an equation far easier to handle than 4. Evaluation of c' and a' from markable agreement with what has now been established as the optimum value derivable via Equation 4, that corresponding to Tm, quoted in Table I.…”

Effect of Carbon Number, Phase Polarity, Temperature, and Flow Rate on Preparative Scale Gas-Chromatographic Separations of Saturated Methyl Esters

“…Earlier publications (8, 9) have discussed the effect that various column-inlet operating conditions, sample injection systems, and sample injection techniques have upon the sample separation and production rate. The column design and functional accessories have already been discussed and are not variable in this work.…”

“…Therefore, it is far better to describe actual preparative scale performance in terms of the production rate that can be attained in a given system at specified operating conditions. Previous publications from these laboratories (8, 9) …”