AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Generation of Particulate Matters (PM) by Burning Pulverized Coals and Biomasses for In-Vitro Toxicity Study
HUNGSOO JOO, Shila Maskey, Mustafa Mamun, Arom Seo, KwangYul Lee, Kihong Park, Gwangju Institute of Science and Technology
Abstract Number: 386 Working Group: Combustion
Abstract The aims of this study are to construct PM generation systems (coal burning and biomass burning PM), to control the level of PM concentrations, to determine physical and chemical properties of the generated PM, and to expose the well-controlled PM directly to cells by using the air-liquid interface (ALI) cell exposure system, or to collect PM samples for measurements of oxidative potential (OP) without cell exposure. A bench scale high temperature (up to 1,200°C) drop-tube furnace (Lindberg/Blue M, Model HTF55342C, Thermo Electron Corp., USA) with an alumina tube by using pulverized coals was used to produce coal burning PM. For generation of various biomass burning aerosols (many types of forest trees and agricultural crop residues), a combustion chamber, a chimney, a primary and secondary dilution chambers were constructed. The PM generation systems were evaluated to produce PM of desired concentration levels which are appropriate for in-vitro toxicity test (i.e., for determination of dose-response relationship). Before in-vitro toxicity tests of the generated PM, particle size distribution, PM2.5 mass concentration, black carbon (BC) concentration, chemical components of non-refractory submicrometer particles, and hygroscopicity and volatility of size-selected particles were measured with the scanning mobility particle sizer (SMPS) (DMA 3088 and CPC 3022, TSI, USA), DustTrack DRX (TSI, USA), Aethalometer (Aethlabs, USA), aerosol mass spectrometer (AMS)(Aerodyne Inc., USA), and hygroscopicity and volatility tandem differential mobility analyzer (HVTDMA). Results for the evaluation of PM generation systems, characteristics of PM emitted from coal burning and biomass burning, and oxidative potential for PM will be presented.