气候变化领域集成服务门户(CCPortal): Speciated and total emission factors of particulate organics from burning western US wildland fuels and their dependence on combustion efficiency

CCPortal

DOI	10.5194/acp-19-1013-2019
	Speciated and total emission factors of particulate organics from burning western US wildland fuels and their dependence on combustion efficiency
	Jen C.N.; Hatch L.E.; Selimovic V.; Yokelson R.J.; Weber R.; Fernandez A.E.; Kreisberg N.M.; Barsanti K.C.; Goldstein A.H.
发表日期	2019
ISSN	16807316
起始页码	1013
结束页码	1026
卷号	19 期号:2
英文摘要	Western US wildlands experience frequent and large-scale wildfires which are predicted to increase in the future. As a result, wildfire smoke emissions are expected to play an increasing role in atmospheric chemistry while negatively impacting regional air quality and human health. Understanding the impacts of smoke on the environment is informed by identifying and quantifying the chemical compounds that are emitted during wildfires and by providing empirical relationships that describe how the amount and composition of the emissions change based upon different fire conditions and fuels. This study examined particulate organic compounds emitted from burning common western US wildland fuels at the US Forest Service Fire Science Laboratory. Thousands of intermediate and semi-volatile organic compounds (I/SVOCs) were separated and quantified into fire-integrated emission factors (EFs) using a thermal desorption, two-dimensional gas chromatograph with online derivatization coupled to an electron ionization/vacuum ultraviolet high-resolution time-of-flight mass spectrometer (TD-GC-GC-EI/VUV-HRToFMS). Mass spectra, EFs as a function of modified combustion efficiency (MCE), fuel source, and other defining characteristics for the separated compounds are provided in the accompanying mass spectral library. Results show that EFs for total organic carbon (OC), chemical families of I/SVOCs, and most individual I/SVOCs span 2-5 orders of magnitude, with higher EFs at smoldering conditions (low MCE) than flaming. Logarithmic fits applied to the observations showed that log (EFs) for particulate organic compounds were inversely proportional to MCE. These measurements and relationships provide useful estimates of EFs for OC, elemental carbon (EC), organic chemical families, and individual I/SVOCs as a function of fire conditions. © Author(s) 2019.
语种	英语
scopus关键词	air quality; atmospheric chemistry; chemical composition; combustion; emission inventory; particulate organic matter; smoke; speciation (chemistry); wildfire; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144694
作者单位	Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, United States; Department of Chemical and Environmental Engineering and College of Engineering, Center for Environmental Research and Technology, University of California, Riverside, CA 92507, United States; Department of Chemistry, University of Montana, Missoula, MT 59812, United States; Aerosol Dynamics Inc., Berkeley, CA 94710, United States; Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, United States; Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, United States
推荐引用方式 GB/T 7714	Jen C.N.,Hatch L.E.,Selimovic V.,et al. Speciated and total emission factors of particulate organics from burning western US wildland fuels and their dependence on combustion efficiency[J],2019,19(2).
APA	Jen C.N..,Hatch L.E..,Selimovic V..,Yokelson R.J..,Weber R..,...&Goldstein A.H..(2019).Speciated and total emission factors of particulate organics from burning western US wildland fuels and their dependence on combustion efficiency.Atmospheric Chemistry and Physics,19(2).
MLA	Jen C.N.,et al."Speciated and total emission factors of particulate organics from burning western US wildland fuels and their dependence on combustion efficiency".Atmospheric Chemistry and Physics 19.2(2019).