Molecular marker analysis as a guide to the sources of fine organic aerosols

Conference · Wed Jul 01 00:00:00 EDT 1992

OSTI ID:7137641

Rogge, W F; Cass, G R ^[1]; Hildemann, L M ^[2]; Mazurek, M A ^[3]; Simoneit, B R.T. ^[4]

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1. California Inst. of Tech., Pasadena, CA (United States)
2. Stanford Univ., CA (United States). Dept. of Civil Engineering
3. Brookhaven National Lab., Upton, NY (United States)
4. College of Oceanography, Oregon State Univ., Corvallis, OR (United States) Environmental Geochemistry Group

The molecular composition of fine particulate (D[sub p] [ge] 2 [mu]m) organic aerosol emissions from the most important sources in the Los Angeles area has been determined. Likewise, ambient concentration patterns for more than 80 single organic compounds have been measured at four urban sites (West Los Angeles, Downtown Los Angeles, Pasadena, and Rubidoux) and at one remote offshore site (San Nicolas Island). It has been found that cholesterol serves as a marker compound for emissions from charbroilers and other meat cooking operations. Vehicular exhaust being emitted from diesel and gasoline powered engines can be traced in the Los Angeles atmosphere using fossil petroleum marker compounds such as steranes and pentacyclic triterpanes (e.g., hopanes). Biogenic fine particle emission sources such as plant fragments abraded from leaf surfaces by wind and weather can be traced in the urban atmosphere. Using distinct and specific source organic tracers or assemblages of organic compounds characteristic for the sources considered it is possible to estimate the influence of different source types at any urban site where atmospheric data are available.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE; USEPA; STOFCA; USDOE, Washington, DC (United States); Environmental Protection Agency, Washington, DC (United States); California State Government, Sacramento, CA (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7137641
• Report Number(s): BNL-47623; CONF-9207163-1; ON: DE93002313
• Resource Relation: Conference: Southern California air quality study data analysis conference, Los Angeles, CA (United States), 21-23 Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
PARTICULATES
CHEMICAL COMPOSITION
POLLUTION SOURCES
AEROSOL MONITORING
EMISSION
LOS ANGELES
ORGANIC COMPOUNDS
URBAN AREAS
AIR POLLUTION MONITORING
CALIFORNIA
DEVELOPED COUNTRIES
MONITORING
NORTH AMERICA
PARTICLES
USA
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)