AAAR 32nd Annual Conference
September 30 - October 4, 2013
Oregon Convention Center
Portland, Oregon, USA
Abstract View
Online Measurement of Aerosol Mass Optical Cross Sections
CHRISTOPHER ZANGMEISTER, James Radney, Michael Zachariah, National Institute of Standards and Technology
Abstract Number: 391 Working Group: Instrumentation and Methods
Abstract We demonstrate the measurement of mobility and mass selected absorption and extinction cross sections of laboratory generated aerosols. We utilize an aerosol particle mass analyzer after mobility selection to isolate aerosol with known size and mass (density). We measure the mass extinction and absorption cross sections, MEC and MAC, respectively, using cavity ringdown and photoacoustic spectroscopies. We demonstrate the utility of the technique for both absorbing and non-absorbing materials. Lastly, we demonstrate mass based particle separation and speciation in a multicomponent aerosol population.