CHED 1092 |
| Benzene and other volatile organic compounds (VOCs) are analyzed in ambient air for two 50 mile transects located north and west of the city of Chicago. Solid-phase microextraction (SPME) is used with gas chromatography/mass spectrometry, and the results are compared with ambient concentrations of air toxics modeled by the EPA in 1996. Gas standards were prepared by diluting a standard calibration mixture with zero air using a stainless steel gas manifold. Ambient air was collected by filling a standard dilution bottle to ambient pressure. SPME fibers were introduced to the ambient air samples for an interval of time and analyzed using GC/MS. The data is compare to the EPA's modeled ambient concentrations, and point and area source are investigated using wind velocity. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |