AN ANALYSIS OF THE COMBINATION SCATTERING SPECTRUM OF DIMETHYL BENZENE,
Abstract
Quantitative analysis of Raman spectra is based on the principle that a compound's content is proportional to its spectral intensity, which is also closely related to the equipment used and to operating conditions. A Hilger E-612 spectrograph with an FL-1 type low voltage mercury lamp as the light source was used to study those factors affecting the intensity of Raman spectra and the suitable operating conditions for this equipment. Intensities of Raman spectra of some hydrocarbons thus collected were found to agree with the reported data. Intensity of Raman spectra was determined by comparing it with that of fluorescence spectra of the standard substance. The Raman spectra were taken by exciting the strongest mercury line of 4358 angstrom and a saturated aqueous solution of sodium nitrite was used as the light filtering liquid. The fluorescence spectra utilized excitation of the mercury line of 3650 angstroms of quinine sulfate fluorescence and a solution of 1 mole of cupric nitrate and 2.5 moles of ethylene diamine was used as the light filtering liquid. Quantitative analysis of optical mixtures, mixtures of known composition, and xylene produced as a by-product by a steel mill was satisfactorily conducted. Hydrocarbons of low aliphatic content may directly undergo Raman spectral analysis with good results without chromatographic fractionation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 03, 1967
- Accession Number
- AD0668097
Entities
People
- Pao-zen Chang
- Wen-pai Liu
- Yu-chuen Wang
Organizations
- National Air and Space Intelligence Center