Fast Grating Spectrograph. Accessories and Techniques for Studying Raman Effect

Abstract

This paper outlines the design and construction of a fast, highresolution, moderate-dispersion grating spectrograph suitable for use in an industrial laboratory. The experimental techniques found satisfactory for the obtaining of Raman spectra in a routine manner are described along with the special appurtenances necessary for such work. Many structural problems which are soluble by the

Raman Spectra of Hydrocarbons

“…The comprehensive monographs of Kohlrausch (14), Hibben (13), Glockler (10), Sutherland (26), and Herzberg (12) have treated rather exhaustively the fundamental principles and reviewed the experimental data. The paper by' Stamm (25) is brief but rather complete. To these the reader is referred for more details.…”

“…Recording spectrometers for this work have not been available and the photographic procedure generally used has not been sufficiently fast or accurate for general analytical purposes. The earlier features of this method of analysis have been described by Goubeau (11) and Glockler (10), and the more recent advances by Stamm (25). All this work was done by recording the Raman spectra photographically.…”

Raman Spectra

“…Goubeau (23) has written a review on the analytical applications of the phenomenon which covers the work to 1939 very well. The paper by Stamm (67) gives a brief but good discussion of the theory.…”

“…Simon (63) showed the possibility of analyzing 0.1% pyrophosphoric acid in anhydrous ortho acid and Stamm (67) showed how the method could be used for the analysis of sodium nitratosodium nitrite solutions in water.…”

“…The use of the 4358 A. line is general, but is dependent upon the elimination of the 4047 A. line as a simultaneous source of energy. It has been suggested (67) that the 5461 A. line be used for colored substances that absorb the 4358 A. line but do not absorb in the 5461 A. region.…”