Chemical Characterization and Toxicologic Evaluation of Airborne Mixtures. Chemical and Physical Characterization of Diesel Fuel Smoke.
OAK RIDGE NATIONAL LAB TN
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Diesel fuel no. 2 DF2 used in the vehicle engine exhaust smoke system VEESS has been chemically and physically characterized. A battery of fractionation procedures was used, including elemental analysis, inductively coupled plasma, UVvisible and infrared spectrometrys, high performance liquid chromatography HPLC, gas chromatography and GCMS. The best overall characterization was provided by HPLC, which yielded four major fractions saturated hydrocarbons, 70 percent substituted benzenes, 16 percent 2-ring aromatics, 12 percent and 3-ring aromatics, 2 percent and one minor fraction polar aromatics, 0.2 percent. These fractions were further analyzed by GCMS. No single component accounted for more than about one percent of the DF2. The major effect of aerosolization of the DF2, in a generator designed to simulate the military deployment of VEESS smoke, was partitioning of constituents between the vapor and the liquid particulate phase on the basis of their relative volatility. No significant levels of constituents not found in the unaerosolized DF2 were observed in the liquid phase of the smoke generated from it.
- Organic Chemistry