DOI: 10.1016/j.atmosenv.2015.08.005
Scopus记录号: 2-s2.0-84940037784
论文题名: Characterization of gaseous and semi-volatile organic compounds emitted from field burning of rice straw
作者: Kim Oanh N ; T ; , Tipayarom A ; , Bich T ; L ; , Tipayarom D ; , Simpson C ; D ; , Hardie D ; , Sally Liu L ; -J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 119 起始页码: 182
结束页码: 191
语种: 英语
英文关键词: Chlorinated compounds
; Concentration profile
; Emission factor
; Gaseous pollutants
; PAHs
; Rice straw burning
Scopus关键词: Aldehydes
; Benzene
; Carbon
; Fog
; Ionization of gases
; Moisture
; Organic pollutants
; Pollution
; Polychlorinated biphenyls
; Polycyclic aromatic hydrocarbons
; Smoke
; Volatile organic compounds
; Chlorinated compounds
; Concentration profiles
; Emission factors
; Gaseous pollutants
; PAHs
; Rice straws
; Gases
; acenaphthylene
; aldehyde
; benzene
; ethylbenzene
; nitrogen dioxide
; pesticide
; polychlorinated biphenyl
; polycyclic aromatic hydrocarbon
; toluene
; volatile organic compound
; xylene
; agricultural emission
; ambient air
; benzene
; biomass burning
; carbon balance
; concentration (composition)
; emission inventory
; experimental design
; paddy field
; particulate matter
; roadside environment
; smoke
; straw
; volatile organic compound
; agricultural worker
; air analysis
; air pollutant
; air sampling
; ambient air
; Article
; carbon balance
; combustion
; controlled study
; harvesting
; human
; moisture
; molecular weight
; plowing
; prescribed burning
; priority journal
; rice
; smoke
; Southeast Asia
; straw
; Southeast Asia
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: Rice straw (RS) field burning, commonly practiced in Asia, produces large amounts of toxic air pollutants but has not been comprehensively characterized. This study conducted field and laboratory measurements for gaseous pollutants and semi-VOCs (16 PAHs, 16 chlorinated pesticides and 14 PCBs) in RS burning smoke to determine emission factors (EFs) and emission concentration profiles. Paddy burning experiments were done following common practices used by farmers in Southeast Asia and EFs were estimated using the carbon balance method. Laboratory hood experiments simulated burning of dry RS (moisture content ~ 5%) and normal RS (moisture ~ 23-30%). Semi-VOCs were analyzed separately in the particulate (PM) and gas phases, and the levels measured in smoke were compared with those in the paddy background and in general ambient air to identify enrichment of the compounds. Lower EFs of all pollutants were obtained for hood burning dry RS as compared to hood burning normal RS. EFs of all detected pollutants in the field burning were higher than hood burning. The EFs of field burning in mg kg-1 RS were 760 for benzene, 230 for toluene, 510 for SO2, 490 for NO2, 260 for total PAHs (88% in gas phase), 0.11 for total PCBs (59% in gas phase) and 0.23 for OCPs (62% in gas phase). The EF of aldehydes determined in the hood experiment was 80-150 mg kg-1 RS. As compared to ambient air, RS smoke had significant enrichment of light PAHs, fluoranthene in PM and acenaphthylene in gas phase. Smoke had a higher proportion of benzene in BTEX than roadside air. Levels of PCBs, OCPs and aldehydes were higher in the burning smoke compared to ambient air, but there was no significant enrichment of particular compounds. This study provides appropriate ranges of EFs for developing emission inventory of RS spread field burning. © 2015 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81551
Appears in Collections: 气候变化事实与影响
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作者单位: Environmental Engineering and Management, Asian Institute of Technology, Pathumthani, Thailand; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, United States
Recommended Citation:
Kim Oanh N,T,, Tipayarom A,et al. Characterization of gaseous and semi-volatile organic compounds emitted from field burning of rice straw[J]. Atmospheric Environment,2015-01-01,119