DOI: 10.1016/j.atmosenv.2017.05.037
Scopus记录号: 2-s2.0-85020003735
论文题名: Chemical characterization and oxidative potential of particles emitted from open burning of cereal straws and rice husk under flaming and smoldering conditions
作者: Fushimi A ; , Saitoh K ; , Hayashi K ; , Ono K ; , Fujitani Y ; , Villalobos A ; M ; , Shelton B ; R ; , Takami A ; , Tanabe K ; , Schauer J ; J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 163 起始页码: 118
结束页码: 127
语种: 英语
英文关键词: Biomass burning
; Dithiothreitol
; Levoglucosan
; Reactive oxygen species
; Redox activity
; Source profile
Scopus关键词: Agricultural wastes
; Aromatic hydrocarbons
; Atmospheric chemistry
; Biomass
; Chemical analysis
; Chlorine
; Combustion
; Crashworthiness
; Crops
; Organic carbon
; Polycyclic aromatic hydrocarbons
; Redox reactions
; Straw
; Temperature
; Waste incineration
; Biomass-burning
; Dithiothreitol
; Levoglucosan
; Reactive oxygen species
; Redox activity
; Source profiles
; Particulate emissions
; carbon
; chloride ion
; dithiothreitol
; levoglucosan
; organic carbon
; polycyclic aromatic hydrocarbon
; potassium ion
; reactive oxygen metabolite
; sitosterol
; stigmasterol
; atmospheric chemistry
; barley
; biomass burning
; chemical analysis
; chemical composition
; combustion
; crop residue
; emission
; oxidation
; reactive oxygen species
; rice
; straw
; wheat
; Article
; atmospheric dispersion
; barley
; biomass
; chemical composition
; combustion
; concentration (parameters)
; correlation analysis
; flame
; low temperature
; macrophage
; mass
; oxidation reduction potential
; particle size
; priority journal
; rice
; rice husk
; smoldering combustion
; straw
; wheat
; Japan
; Hordeum
; Triticum aestivum
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: Open burning of crop residue is a major source of atmospheric fine particle emissions. We burned crop residues (rice straws, barley straws, wheat straws, and rice husks produced in Japan) in an outdoor chamber and measured particle mass, composition (elemental carbon: EC, organic carbon: OC, ions, elements, and organic species), and oxidative potential in the exhausts. The fine particulate emission factors from the literature were within the range of our values for rice straws but were 1.4–1.9 and 0.34–0.44 times higher than our measured values for barley straw and wheat straw, respectively. For rice husks and wheat straws, which typically lead to combustion conditions that are relatively mild, the EC content of the particles was less than 5%. Levoglucosan seems more suitable as a biomass burning marker than K+, since levoglucosan/OC ratios were more stable than K+/particulate mass ratios among crop species. Stigmasterol and β-sitosterol could also be used as markers of biomass burning with levoglucosan or instead of levoglucosan. Correlation analysis between chemical composition and combustion condition suggests that hot or flaming combustions enhance EC, K+, Cl− and polycyclic aromatic hydrocarbons emissions, while low-temperature or smoldering combustions enhance levoglucosan and water-soluble organic carbon emissions. Oxidative potential, measured with macrophage-based reactive oxygen species (ROS) assay and dithiothreitol (DTT) assay, of open burning fine particles per particulate mass as well as fine particulate emission factors were the highest for wheat straws and second highest for rice husks and rice straws. Oxidative potential per particulate mass was in the lower range of vehicle exhaust and atmosphere. These results suggest that the contribution of open burning is relatively small to the oxidative potential of atmospheric particles. In addition, oxidative potential (both ROS and DTT activities) correlated well with water-insoluble organic species, suggesting that OC components, especially water-insoluble OC components emitted under non-flaming combustion, have a major impact on oxidative potential. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82312
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute for Environmental Studies, 16–2 Onogawa, Tsukuba, Japan; University of Wisconsin-Madison, 660 North Park Street, Madison, WI, United States; Environmental Science Analysis and Research Laboratory, 1-500-82 Matsuo-yosegi, Hachimantai, Iwate, Japan; National Institute for Agro-Environmental Sciences, 3–1–3 Kannondai, Tsukuba, Japan
Recommended Citation:
Fushimi A,, Saitoh K,, Hayashi K,et al. Chemical characterization and oxidative potential of particles emitted from open burning of cereal straws and rice husk under flaming and smoldering conditions[J]. Atmospheric Environment,2017-01-01,163