The examination of microsamples by infrared spectroscopy is best accomplished by reduction of beam area with small apertures. However, this technique produces energy losses and aperturing effects which distort the baseline. Methods of dealing with energy losses and correcting baseline distortions by mechanical and digital means are examined.
1976 Annual Book of ASTM Standards (American Society for Testing and Materials, Philadelphia, 1976), Part 42, E334–68, p. 257.
2.
AylingG. M., Appl. Spectrosc. Rev.8, 65 (1974).
3.
ObremskiR. J. and SloaneH. J., Microsampling with the Model IR-4200 Series Infrared Spectrophotometers (Beckman, Irvine, CA), Industrial Technical Report TR-599.
4.
PottsW. J.Jr., Chemical Infrared Spectroscopy, Vol. I, Techniques (Wiley, New York, 1963), pp. 205, 232 ff.
5.
CrollB. T., Chem. Ind. p. 1156 (1971).
6.
GrimmW., Chem. Tech.17, 167 (1965).
7.
HirshfeldT., Appl. Spectrosc.30, 353 (1976).
8.
PottsW. J.Jr. and SmithA. L., Appl. Opt.6, 257 (1967).
