This study explored different chemical characterization methods of agricultural
and urban airborne particulate matter. Three different field campaigns are discussed. For
the agricultural aerosols, measurement of the chemical composition of size-resolved
agricultural aerosols collected from a ground site at the nominally downwind and
upwind edge of a feedlot in West Texas were reported. High volume cascade impactor
samplers were used for the collection of the particles, and two major analytical methods
were applied to characterize different components of the aerosols, ion chromatography
(IC ) was used to measure ionic composition with the main targets being ammonium
(NH4
), nitrate (NO3
-), and sulfate (SO4
2-), direct thermal desorption gas
chromatography-mass spectrometry/flame ionization detection (GC-MS/FID)
methodology was used to identify and quantify organic compounds in the aerosol
particles.
For the urban aerosols, I report the measurement of mass, and the chemical
composition of size-resolved aerosols collected from two different locations in Houston,
analyzed by the thermal desorption GC-MS/FID method. The investigation of single
particle composition using RM is reported as well: RM and chemical mapping
techniques have been applied for the qualitative analysis of components in the samples
of air particulate matter collected in downtown Houston.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2010-08-8267 |
| Date | 2010 August 1900 |
| Creators | Zhou, Lijun |
| Contributors | Schade, Gunnar W. |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | application/pdf |
Page generated in 0.0019 seconds