Field Measurement and Model Evaluation Program for Assessment of the Environmental Effects of Military Smokes: Oil Analysis Method for Study of Atmospheric Dispersion of Military Fog Oil Smokes
Abstract
An improved method for anlaysis of fog oil samples of both aerosol and vapor from field dispersion experiments is described. The intent of this method is to maintain the accuracy and sensitivity of earlier procedures while reducing the analysis and the time required for manual of the samples before analysis. In this method fog-oil is vaporized from a sample using heat, then the hot vapor is analyzed by gas chromatography. A non-polar packed column, which can tolerate a wide range in sample mass loadings, is used for separation of the fog-oil chemical constituents. A flame ionization detector is used to determine the total sample mass. A sensitivity of 0.03 mg has been achieved, and samples up to 20 mg can be analyzed easily. Chromatograms produced using this method give a qualitative molecular weight distribution of the oil. Fog oil smoke is produced by vaporizing the liquid oil in the engine manifold of a thermal smoke generator. Upon mixing into the atmosphere, the vapor forms small aerosol droplets. Glass fiber filters are used for sampling the aerosol fraction of the smoke. Stainless steel tubes filled with Tenax-GC are used for sampling the vapor fraction of the oil. Keywords: Screening smoke; Obscuring smoke; Air pollution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1989
- Accession Number
- ADA216049
Entities
People
- A. J. Policastro
- George Devaull
- J. C. Liljegren
- W. E. Dunn
Organizations
- Argonne National Laboratory