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Figure 8.2
The Separation of Some Polymer Additives Using a LC/FTIR Tandem System
Reprinted with permission from M. W. Raynor, K. D. Bartle, 1. L. Davies,
A. Williams, A. A. Clifford, J. M. Chalmers and B. W. Cook, Anal. Chem.,
60(5)(1988)427, Copyright 1988 American Chemical Society
The sample injected on the column contained 200 ng of each component. On the right-hand side of
Figure 8.2, the spectra obtained for Tinuvin P is shown, taken directly from the potassium bromide
window together with the reference spectrum for the same compound. It is seen that the spectrum is
clear and well resolved, and more than adequate to confirm the identity of the solute. It would appear
from the report that the window was not moveable and so each peak was manually collected.
During the 1980s the transport concept was actively developed by a number of workers. Gagel and
Bieman [81 described a disk transporter that had a reflective surface, which was used in conjunction
with a simple nebulizer to deposit the sample on the surface of the rotating disk. Their basic apparatus is
shown diagramatically in Figure 8.3.
They employed an aluminum disk on the surface of which was cemented a circular glass mirror. The
disk was rotated continuously as the separation
