title: Source apportionment of daily fine particulate matter at Jefferson Street, Atlanta, GA, during summer and winter.
abstract: The primary emission source contributions to fine organic carbon (OC) and fine particulate matter (PM2.5) mass concentrations on a daily basis in Atlanta, GA, are quantified for a summer (July 3 to August 4, 2001) and a winter (January 2-31, 2002) month. Thirty-one organic compounds in PM2.5 were identified and quantified by gas chromatography/mass spectrometry. These organic tracers, along with elemental carbon, aluminum, and silicon, were used in a chemical mass balance (CMB) receptor model. CMB source apportionment results revealed that major contributors to identified fine OC concentrations include meat cooking (7-68%; average: 36%), gasoline exhaust (7-45%; average: 21%), and diesel exhaust (6-41%; average: 20%) for the summer month, and wood combustion (0-77%; average: 50%); gasoline exhaust (14-69%; average: 33%), meat cooking (1-14%; average: 5%), and diesel exhaust (0-13%; average: 4%) for the winter month. Primary sources, as well as secondary ions, including sulfate, nitrate, and ammonium, accounted for 86 +/- 13% and 112 +/- 15% of the measured PM2.5 mass in summer and winter, respectively.
authors.affiliation: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332-0340, USA. mzheng@eas.gatech.edu
authors.forename: Mei
authors.initials: M
authors.lastname: Zheng
authors.forename: Glen R
authors.initials: GR
authors.lastname: Cass
authors.forename: Lin
authors.initials: L
authors.lastname: Ke
authors.forename: Fu
authors.initials: F
authors.lastname: Wang
authors.forename: James J
authors.initials: JJ
authors.lastname: Schauer
authors.forename: Eric S
authors.initials: ES
authors.lastname: Edgerton
authors.forename: Armistead G
authors.initials: AG
authors.lastname: Russell
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004784:Environmental Monitoring; D005374:Filtration; D005845:Georgia; D009930:Organic Chemicals / Q000032:analysis; D010316:Particle Size; D012621:Seasons
chemical_list: D000395:Air Pollutants, Occupational; D009930:Organic Chemicals