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Conroy and Griffiths [20] developed a rather involved solvent extraction device that could be employed
with an LC/FTIR combination. The device embodied an extraction procedure that continuously
extracted the dissolved solute from the column eluent into dichloromethane. The dichloromethane was
then concentrated and finally dispersed onto a plug of potassium chloride powder. The solvent was
evaporated and a spectrum taken in the usual manner. This device appears a little clumsy but,
nevertheless, introduced a new basic concept for fabricating LC/IR interfaces. Following the basic
principle of Conroy and Griffiths, Johnson et al. [21] developed a rather unique extraction cell for an
LC/IR system.
Figure 8.22
An Extraction Interface for LC/IR
