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THE IMPACT OF PASSIVE SAMPLING METHODOLOGIES USED IN THE DEARS
Citation:
WILLIAMS, R. W., A. F. VETTE, D. A. WHITAKER, C. W. CROGHAN, P. A. JONES, H. DAUGHTREY, K. OLIVER, H. JACUMIN, DENNIS D. WILLIAMS, C. E. RODES, J. W. THORNBURG, J. S. HERRINGTON, AND J. ZHANG. THE IMPACT OF PASSIVE SAMPLING METHODOLOGIES USED IN THE DEARS. Presented at 2007 National Environmental Monitoring Conference, Cambridge, MA, August 19 - 23, 2007.
Impact/Purpose:
Six objectives have been defined for this study.
(1) To determine the associations between concentrations measured at central site monitors and outdoor residential, indoor residential and personal exposures for selected air toxics, PM constituents, and PM from specific sources.
(2) To describe the physical and chemical factors that affect the relationship between central site monitors and outdoor residential and indoor residential concentrations, including those that affect ambient source impacts.
(3) To identify the human activity factors that influence personal exposures to selected PM constituents and air toxics.
(4) To improve and evaluate models used to characterize and estimate residential concentrations of and human exposures to selected air toxics, PM constituents, and PM from specific sources.
(5) To investigate and apply source apportionment models to evaluate the relationships for PM from specific sources and to determine the contribution of specific ambient sources to residential concentrations and personal exposures to PM constituents and air toxics.
(6) To determine the associations between ambient concentrations of criteria gases (O3, NO2, and SO2) and personal exposures for these gases as well as personal exposures to air toxics, PM constituents, and PM from specific sources.
Description:
This abstract details the use of passive sampling methodologies in the Detroit Exposure and Aerosol Research Study (DEARS). A discussion about the utility of various gas-phase passive samplers used in the study will be described along with examples of field data measurements employing the technology.