AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Chemical Composition, Environmental Impact and Health Implication of Primary and Secondary Emissions of Gases and Particles from Residential Wood Burning
IMAD EL HADDAD, Giulia Stefenelli, Deepika Bhattu, Jun Zhou, Giancarlo Ciarelli, Emily Bruns, Peter Zotter, Thomas Nussbaumer, Amelie Bertrand, Nicolas Marchand, Brice Temime-Roussel, Sebnem Aksoyoglu, Jay Slowik, Urs Baltensperger, Andre Prévôt, Josef Dommen, Paul Scherrer Institute
Abstract Number: 290 Working Group: Health Related Aerosols
Abstract Organic gases undergoing conversion to form secondary organic aerosol (SOA) during atmospheric aging are largely unidentified. SOA dominates the atmospheric organic aerosol burden and this knowledge gap contributes to uncertainties in aerosol effects on climate and human health. Here, we use high-resolution mass spectrometry and perform a set of smog chamber and flow tube experiments to quantify primary and aged gaseous and particulate emissions from residential wood combustion, a major source of pollution particularly in regions with cooler climate. SOA oxidative potential is assessed using an online reactive oxygen species analyzer. Four types of residential stoves, two pellet burners and an industrial boiler were run under different burning conditions. The main parameters affecting emission strength and composition are identified and the major gaseous precursors responsible for SOA formation are determined. SOA is mainly formed through the oxidation of non-traditional precursors, including phenolic compounds from lignin pyrolysis and aromatic hydrocarbons from incomplete combustion. Based on laboratory data, regional air quality models are updated to better assess the impact of wood combustion on emissions and SOA formation in Europe during winter.