Chemical and physical characterization of wood smoke under controlled conditions

Seyedehsan Hosseini, Qi Li, Arthur Miller, David Cocker, Manish Sharivastava, David Weise, Weimin Hao, Robert Yokelson, Heejung Jung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A selection of shrubs from California and Arizona and forest fuels from North Carolina and Georgia were burned under controlled environmental conditions at the USDA Forest Service's Fire Science Laboratory in Missoula. The goal was to improve measurement of particle emission factors. The chemical and physical properties of PM2.5 emissions during flaming and smoldering phases were characterized using a suite of real-time and off-line instrumentations. The particle size distribution indicated the number distribution peaked around 50nm for flaming and evolved into bimodal distribution with a second peak below 10nm during smoldering phase. EC/OC analysis of quartz filters suggests OC contributes to the most of total carbon fraction. A High Resolution Time-of-Flight Aerosol Mass Spectrometer identified the organic biomass signature in particles associated with the flaming and smoldering phases while ammonium nitrate, sulfate and chloride species were only observed during flaming stage. Elemental compositional analysis of oxygen and carbon indicated little changes in the O:C ratio (∼0.25-0.30) throughout entire burn. PM samples also were taken using a NIOSH-developed portable electrostatic precipitator. TEM, EDS, and Image analysis were used to classify recognizable morphologies ad to perform elemental analysis on PM.

Original languageEnglish
Title of host publicationFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting
PublisherWestern States Section/Combustion Institute
Pages438-456
Number of pages19
ISBN (Electronic)9781615676507
StatePublished - 2009
EventFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 - Irvine, United States
Duration: Oct 26 2009Oct 27 2009

Publication series

NameFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting
Volume1

Conference

ConferenceFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009
Country/TerritoryUnited States
CityIrvine
Period10/26/0910/27/09

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