Polar Organic Compounds in Fine Particles from the New York, New Jersey, and Connecticut Regional AirshedEPA Grant Number: R832165
Title: Polar Organic Compounds in Fine Particles from the New York, New Jersey, and Connecticut Regional Airshed
Investigators: Mazurek, Monica
Institution: Rutgers, The State University of New Jersey
EPA Project Officer: Chung, Serena
Project Period: January 1, 2005 through December 31, 2007 (Extended to December 31, 2009)
Project Amount: $449,150
RFA: Source Apportionment of Particulate Matter (2004) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Particulate Matter , Air
The three main goals of this project are: 1) to identify and measure the ambient abundances of polar organic compounds found as PM2.5 in the NY, NJ and CT regional airshed using Liquid Chromatography/Mass Spectrometry (LCMS) chemical analysis; 2) to measure and identify both known and potential secondary organic aerosol source markers found within the fine particle acidic organic fraction; and 3) to identify emissions of polar organic compounds from primary sources, including vehicular sources and wood combustion.
Archived filters collected as part of the Speciation of Organics for Apportionment of PM-2.5 (SOAP) study will be evaluated. The fine particle filters were collected on an identical 24-hr sampling schedule as the PM-2.5 Speciation Trends Network from May 2002 through May 2003 at four sites in the NY City metropolitan area. The LCMS analytical work will expand the chemical profiles for PM2.5 polar organic compounds with new information on the abundance and chemical composition of fine particle organic acids and bases. LCMS analyses will target specific groups of acidic organic compounds such as C3-C9 dicarboxylic acids, benzene dicarboxylic acids, and substituted phenols. Basic organic compounds (reduced nitrogen containing compounds) will be analyzed by LCMS under positive mode ionization conditions to determine the complex mixture distribution and abundance of PM basic organic compounds.
LCMS analyses of fine particles from the metropolitan NY airshed will expand the chemical profiles for PM2.5 polar organic compounds with new information on the abundance and chemical composition of fine particle organic acids and bases. This molecular-level technology for polar organic compounds will improve current information on the chemical makeup of fine PM that is water-soluble and likely to be involved in atmospheric haze formation and more rapidly absorbed within the human respiratory tract. The expanded chemical information for polar organic compounds will enhance present technology for determining the abundance and molecular composition of fine particle secondary organic compounds and primary emission sources from the New York metropolitan receptor sites.