10th International Aerosol Conference
September 2 - September 7, 2018
America's Center Convention Complex
St. Louis, Missouri, USA

Abstract View

Difference in the Sampling Artifacts During Aerosol Collection between Cyclone and Filter

DAIKI SHISHIDO, Tomoaki Okuda, Keio University

Abstract Number: 187
Working Group: Aerosol Chemistry

Abstract
In recent years, the influence on health by fine aerosol particles such as PM2.5 has been concerned. For this reason, it has become necessary to identify the factors (such as chemical components), that determine health effects. However, utilized filter collection of PM2.5 could occur unexpected artifacts, for example, adsorption of gaseous substances, chemical reaction with particles and volatilization of semi-volatile components. Therefore, we developed a high-volume simultaneous sampler for fine (PM2.5) and coarse aerosol particles using the impactor and cyclone techniques. This device can collect PM2.5 as powder form without the use of filter. In this study, we collected PM2.5 using the new method (virtual impactor and cyclone), and a conventional method (real impactor and filter), and analyzed these chemical components. As a result, it was found that the loss of nitrate may be caused in filter collection, however, the loss of nitrate may be prevented in cyclone collection.