DOI: 10.1016/j.atmosenv.2015.03.001
Scopus记录号: 2-s2.0-84927619761
论文题名: Emissions from southeastern U.S. Grasslands and pine savannas: Comparison of aerial and ground field measurements with laboratory burns
作者: Aurell J ; , Gullett B ; K ; , Tabor D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 111 起始页码: 170
结束页码: 178
语种: 英语
英文关键词: Black carbon
; Brown carbon
; Grasslands
; PAH
; PCDD
; Pine savannas
; PM2.5
; VOCs
Scopus关键词: Aromatic hydrocarbons
; Balloons
; Carbon
; Combustion
; Efficiency
; Electric conductivity measurement
; Laboratories
; Organic pollutants
; Particulate emissions
; Polycyclic aromatic hydrocarbons
; Uncertainty analysis
; Volatile organic compounds
; Black carbon
; Brown carbons
; Grasslands
; PCDD
; Pine savannas
; VOCs
; Organic carbon
; black carbon
; organic carbon
; polycyclic aromatic hydrocarbon
; volatile organic compound
; aerial photography
; air sampling
; black carbon
; coniferous forest
; emission inventory
; ground-based measurement
; instrumentation
; PAH
; particulate matter
; PCDD
; PCDF
; savanna
; volatile organic compound
; air analysis
; air pollution
; Article
; biomass
; burn
; combustion
; forest
; grassland
; laboratory test
; particulate matter
; pine
; prescribed burning
; priority journal
; savanna
; United States
; United States
; Pinus palustris
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Emissions from prescribed burns of a managed longleaf pine (Pinus palustris) forest and grass/savanna fields in western Florida were measured by simultaneous aerial and ground sampling. Results werecompared with measurements made in an open burn laboratory test facility using biomass gathered from the same stands. Measurements included polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), particulate matter (PM2.5 ), elemental carbon (EC), organic carbon (OC), black carbon (BC), brown carbon (BrC), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs). The flaming phase (high modified combustion efficiency) was characterized by high levels of BC and BrC yet low levels of VOCs. In general, ground-based measurements of PM2.5 , BC, and BrC reported marginally higher emission factors than those measured in the plume by aerostat (balloon)-lofted instruments. The optically-determined BC emission factor was approximately ten times higher than many previously reported results. Simultaneous BC and EC measurements showed that EC values were, on average, 42% lower than the BC values, lending uncertainty tothe common use of EC measurements as a BC surrogate. PAH emission factors were indistinguishable across the sampling scenarios, while PCDDs/PCDFs saw a significant decline in the laboratory testing. Limited distinctions in particle-related emissions between aerial and ground measurements suggest sampling bias between these methods. Emission factor distinctions between laboratory burn simulations and field tests appear primarily related to lower combustion efficiencies in the latter, perhaps due to higher biomass moisture or surface wetness. •PM2.5 , BC, BrC emission factors were marginally higher from ground vs air samples.•BC and BrC emission factors increased with modified combustion efficiency.•EC emission factors were over 40% lower than BC values.•Laboratory testing showed lower PCDD/PCDF emission factors than field testing. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81766
Appears in Collections: 气候变化事实与影响
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作者单位: National Research Council Post Doctoral Fellow to the U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC, United States; U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC, United States; University of Dayton Research Institute, 300 College Park, Dayton, OH, United States
Recommended Citation:
Aurell J,, Gullett B,K,et al. Emissions from southeastern U.S. Grasslands and pine savannas: Comparison of aerial and ground field measurements with laboratory burns[J]. Atmospheric Environment,2015-01-01,111