Mutagenic atmospheric aerosol sources apportioned by receptor modeling
During winter 1985 EPA collected air quality samples and data in residential locations in Albuquerque, NM and Raleigh, NC as part of its Integrated Air Cancer Project. Major objectives of the study were to evaluate new sampling, analysis and receptor modeling procedures and to apportion fine particle mass and mutagenic activity of the organic fraction of fine particles to appropriate sources. Samples were collected in the two cities for 12-hour periods beginning at 7:00 am and 7:00 pm. The schedule was followed to aid in resolving the organic and inorganic chemical species emitted from residential wood burning (normally a night time activity) and from mobile source emissions. Samples were analyzed for mutagenicity, organic carbon, 14C content and inorganic species. Data from these analyses served as input to a multi-linear regression (MLR) model that calculates the relative contribution of extractable particulate organic matter and mutagenic activity observed in these two cities. The {sup 14}C results were used to validate the MLR model. Even though the monitoring sites in these cities, were both selected and found to be heavily impacted by residential wood burning (83% 94% of the organic aerosol mass due to wood burning), a proportionately larger % of the mutagenicity of the fine particles was attributed to mobile sources (25 and 37%).
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (USA). Atmospheric Sciences Research Lab.
- OSTI ID:
- 7064996
- Report Number(s):
- PB-90-217399/XAB; EPA--600/J-90/005
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
550501 -- Metabolism-- Tracer Techniques
560300 -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AEROSOLS
AIR POLLUTION
AIR POLLUTION MONITORING
CARBON 14 COMPOUNDS
COLLOIDS
DISPERSIONS
FEDERAL REGION IV
FEDERAL REGION VI
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MATHEMATICAL MODELS
MATHEMATICS
MUTAGEN SCREENING
NEW MEXICO
NORTH AMERICA
NORTH CAROLINA
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION
POLLUTION SOURCES
REGRESSION ANALYSIS
SCREENING
SITE SURVEYS
SOLS
STATISTICS
TABLES
TRACER TECHNIQUES
USA