Grantee Research Project Results

Characterization of the Chemical Composition of Atmospheric Ultrafine Particles

EPA Grant Number: R827354C001
Subproject: this is subproject number 001 , established and managed by the Center Director under grant R827354
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
Center: Design of Risk-reducing, Innovative-Implementable Small-System Knowledge Center
Center Director: Summers, R. Scott
Title: Characterization of the Chemical Composition of Atmospheric Ultrafine Particles
Investigators: Hopke, Philip K. , Prather, Kimberly A. , Dillner, Ann , Cass, Glen
Current Investigators: Cass, Glen , Prather, Kimberly A. , Hopke, Philip K. , Dillner, Ann
Institution: Clarkson University , University of California - Riverside , Arizona State University , Georgia Institute of Technology
Current Institution: Georgia Institute of Technology , Arizona State University , Clarkson University , University of California - Riverside
EPA Project Officer: Chung, Serena
Project Period: June 1, 1999 through May 31, 2005 (Extended to May 31, 2006)
RFA: Airborne Particulate Matter (PM) Centers (1999) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Particulate Matter , Air

Objective:

The objective of this research project is to identify the chemical composition of atmospheric ultrafine particle samples that will be collected in field experiments in Houston, TX, seven cities in Southern CA, and Riverside, CA. Three research groups, at the Georgia Institute of Technology (GIT), Arizona State University (ASU), and the University of California–San Diego (UCSD), are collaborating on this research project.

Approach:

Once the ultrafine particle samples are collected, using a nano-micro-orfice impactor (nano-MOI), their concentration, organic content, metal content, and elemental composition will be determined and compared between the cities. Additionally, an ultrafine particle aerosol time of flight (TOF) spectrometry instrument will be constructed. With its aerodynamic lens system, the instrument will be an effective method for detecting ultrafine particles.

Expected Results:

The collection and chemical composition analysis of ultrafine particles in several U.S. cities will aid researchers in understanding the prevalence and potential harms of ultrafine particles in the environment and their impact on human health.

Publications and Presentations:

Publications have been submitted on this subproject: View all 30 publications for this subproject | View all 106 publications for this center

Journal Articles:

Journal Articles have been submitted on this subproject: View all 29 journal articles for this subproject | View all 91 journal articles for this center

Supplemental Keywords:

Houston, Texas, TX, Riverside, California, CA, Rochester, New York, NY, ultrafine, aerosol, particulate matter, atmosphere, mass spectrometry., RFA, Health, Scientific Discipline, Air, Geographic Area, particulate matter, Environmental Chemistry, Health Risk Assessment, Epidemiology, State, Risk Assessments, Biochemistry, ambient air quality, particle size, particulates, sensitive populations, cardiopulmonary responses, fine particles, human health effects, morbidity, ambient air monitoring, chemical characteristics, pulmonary disease, susceptible populations, epidemelogy, environmental health effects, particle exposure, nano differential mobility analyzer, human exposure, particulate exposure, chemical kinetics, Texas (TX), PM, mortality, urban environment, aerosols, ultrafine particles, chemical speciation sampling

Progress and Final Reports:

Main Center Abstract and Reports:

R827354 Design of Risk-reducing, Innovative-Implementable Small-System Knowledge Center

Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
R827354C001 Characterization of the Chemical Composition of Atmospheric Ultrafine Particles
R827354C002 Inflammatory Responses and Cardiovascular Risk Factors in Susceptible Populations
R827354C003 Clinical Studies of Ultrafine Particle Exposure in Susceptible Human Subjects
R827354C004 Animal Models: Dosimetry, and Pulmonary and Cardiovascular Events
R827354C005 Ultrafine Particle Cell Interactions: Molecular Mechanisms Leading to Altered Gene Expression
R827354C006 Development of an Electrodynamic Quadrupole Aerosol Concentrator
R827354C007 Kinetics of Clearance and Relocation of Insoluble Ultrafine Iridium Particles From the Rat Lung Epithelium to Extrapulmonary Organs and Tissues (Pilot Project)
R827354C008 Ultrafine Oil Aerosol Generation for Inhalation Studies

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.