2003 Progress Report: Characterization of Fine Particulate MatterEPA Grant Number: R827355C004
Subproject: this is subproject number 004 , established and managed by the Center Director under grant R827355
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
Center: Airborne PM - Northwest Research Center for Particulate Air Pollution and Health
Center Director: Koenig, Jane Q.
Title: Characterization of Fine Particulate Matter
Investigators: Covert, David S. , Elleman, Rob , Jansen, Karen , Koenig, Jane Q. , Larson, Timothy V. , Schreuder, Astrid
Current Investigators: Covert, David S. , Haneuse, Sebastien , Koenig, Jane Q. , Larson, Timothy V. , Lumley, Thomas , Schreuder, Astrid
Institution: University of Washington
EPA Project Officer: Chung, Serena
Project Period: June 1, 1999 through May 31, 2004 (Extended to May 31, 2006)
Project Period Covered by this Report: June 1, 2003 through May 31, 2004
Project Amount: Refer to main center abstract for funding details.
RFA: Airborne Particulate Matter (PM) Centers (1999) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Particulate Matter , Air
The objectives of this research project are to: (1) measure the aerosol number-size distribution for Beacon Hill from 20 nm to 5 μm diameter and process these data; (2) process and examine for correlations to central site Beacon Hill modal data the outdoor aerosol number-size distribution data for seven selected panel study homes over the winters 2000-2002; and (3) conduct indoor/outdoor size distribution analyses to compare each of the four particle size groups at each panel study residence to the estimated infiltration efficiency obtained using the recursive model and nephelometer data.
The aerosol number-size distribution for Beacon Hill from 20 nm to 5 μm diameter has been measured, and the data have been processed for December 2000 through March 2003. A manuscript describing the data is in preparation. The outdoor aerosol number-size distribution data for seven selected panel study homes over the winters 2000-2002 have been processed and examined for correlations to central site Beacon Hill modal data. Indoor/outdoor size distribution analyses were conducted to compare each of the four particle size groups at each panel study residence to the estimated infiltration efficiency obtained using the recursive model and nephelometer data.
All of the data have been processed to determine the mean concentrations, diameters, and standard deviations of the modes of the number-, surface-, and mass-size distributions for up to four log-normally fitted modes with the measured size range. These modes are termed nanoparticle mode, ultrafine mode, accumulation mode, and coarse mode and have the following diameter ranges: Dp < 20 nm, 20 nm < Dp < 100 nm, 1000 nm < Dp < 1,000 nm, and 1,000 nm < Dp, respectively. The fitting algorithm minimizes the residual between the measured concentration as a function of size and the fit values for the three moments of the distribution simultaneously, rather than for each moment individually. Time series plots (number, area, and volume concentrations in each mode) have been created. These plots have enabled observation and investigation of patterns, seasonal and diurnal variation in the data modes, and evident features.
Emergency Department health data were obtained and processed from two area hospitals. These currently are being utilized in a fine particle health effects analysis. In addition, chemical speciation data have been obtained and processed for 2001-2002.
We will complete the following: (1) incorporation of indoor and outdoor data into multilinear engine (ME2) chemical speciation modeling; and (2) NO2 and PM2.5 modal correlation analyses. The size data are being merged with 24-hour and 1-hour chemical mass data, including major ions, elemental carbon (EC), organic carbon (OC), trace metals, and gravimetric mass data. This combined data set currently is being used to identify urban industrial source types through positive matrix factorization and ME2 algorithms. The 1-hour time resolution of the ionic, EC, OC, and size distribution data will enhance the factor and source apportionment analysis. The high time resolution coupled with size resolution points to sources not otherwise distinguishable.
Journal Articles on this Report : 2 Displayed | Download in RIS Format
|Other subproject views:||All 5 publications||3 publications in selected types||All 3 journal articles|
|Other center views:||All 209 publications||113 publications in selected types||All 109 journal articles|
Supplemental Keywords:ambient particles, fine particles, combustion, health, exposure, biostatistics, susceptibility, human susceptibility, sensitive populations, air toxics, genetic susceptibility, indoor air, indoor air quality, indoor environment, tropospheric ozone, California, CA, polyaromatic hydrocarbons, PAHs, hydrocarbons, acute cardiovascular effects, aerosols, air pollutants, air pollution, air quality, airborne pollutants, airway disease, airway inflammation, allergen, ambient aerosol, ambient aerosol particles, ambient air, ambient air quality, ambient particle health effects, animal model, assessment of exposure, asthma, atmospheric aerosols, atmospheric chemistry, biological markers, biological response, cardiopulmonary response, cardiovascular disease, children, children’s vulnerability, combustion, combustion contaminants, combustion emissions, epidemiology, exposure, exposure and effects, exposure assessment, harmful environmental agents, hazardous air pollutants, health effects, health risks, human exposure, human health effects, human health risk, incineration, inhalation, lead, morbidity, mortality, mortality studies, particle exposure, particle transport, particulates, particulate matter, risk assessment,, RFA, Scientific Discipline, Air, Geographic Area, Ecosystem Protection/Environmental Exposure & Risk, particulate matter, Environmental Chemistry, Health Risk Assessment, State, Monitoring/Modeling, Biochemistry, indoor air, Atmospheric Sciences, ambient aerosol, environmental monitoring, fate and transport, particle size, particulates, atmospheric dispersion models, atmospheric measurements, hygroscopic properties, environmental measurement, ambient air, air pollution, Washington (WA), particulate matter mass, size distribution monitoring, indoor air quality, ecological models, transport modeling, aerosol analyzers, aerosols, air quality, dosimetry
Progress and Final Reports:Original Abstract
Main Center Abstract and Reports:R827355 Airborne PM - Northwest Research Center for Particulate Air Pollution and Health
Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
R827355C001 Epidemiologic Study of Particulate Matter and Cardiopulmonary Mortality
R827355C002 Health Effects
R827355C003 Personal PM Exposure Assessment
R827355C004 Characterization of Fine Particulate Matter
R827355C005 Mechanisms of Toxicity of Particulate Matter Using Transgenic Mouse Strains
R827355C006 Toxicology Project -- Controlled Exposure Facility
R827355C007 Health Effects Research Core
R827355C008 Exposure Core
R827355C009 Statistics and Data Core
R827355C010 Biomarker Core
R827355C011 Oxidation Stress Makers