HR: 1340h
AN: A33D-1550    [Abstracts]
TI: VOC Source Apportionment in Houston, TX, during TexAQS II
AU: * Leuchner, M
EM: mleuchner@uh.edu
AF: University of Houston, 4800 Calhoun Rd, Houston, TX 77204-5007, United States
AU: Rappenglueck, B
EM: brappenglueck@uh.edu
AF: University of Houston, 4800 Calhoun Rd, Houston, TX 77204-5007, United States
AB: During the TexAQS II campaign in summer 2006 (08/07/06 - 09/30/06) continuous online measurements of C₂ - C₁₀ Volatile Organic Compounds (VOCs) were performed with an online gas chromatograph (GC/FID) at the Moody Tower supersite on the University of Houston campus. In addition, VOC data were obtained by the TCEQ and Enhanced Industry Sponsored Monitoring auto-GC networks near the Houston Ship Channel area. A comparative analysis of source contributions at the Moody Tower receptor site and at one Ship Channel site representing major industrial emissions, with the goal of assessing the impact of these emissions onto the 10 km distant receptor site, were performed. The analysis of VOC results indicates complex mixtures from traffic, industrial, and biogenic sources. In order to identify and apportion these source contributions of the VOCs to the receptor site during the campaign, multivariate receptor models were applied. The results of a principal component analysis (PCA) and a positive matrix factorization (PMF) reveal a set of factors and source profiles that are associated with several anthropogenic (industrial, traffic) as well as biogenic sources.
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting