Tuesday, 15 January 2002: 9:00 AM
PM2.5 measurements by different continuous instrumentsin Philadelphia
Several instruments to measure airborne particle mass were deployed in Philadelphia in July 2001. These devices were a Continuous Aerosol Mass Monitor (CAMM) developed at Harvard School of Public Health, a Real-time total Ambient Mass Sampler (RAMS) developed at Brigham Young University, a 30C Tapered Element Oscillating Microbalance (TEOM) with a Sample Equilibration System (SES), and two integrating nephelometers with and without a Nafion dryer. The goal of the study was to compare the resulting mass measurements between the new instruments, the FRM sampler, and other means of airborne particle measurements. A good agreement among the data from the systems was obtained. The results of the measurements will be presented; the differences in the data and comparisons with the chemical composition data will be discussed.