DOI: 10.1016/j.atmosenv.2020.117351
论文题名: Chemical characterization of submicron particulate matter (PM1) emitted by burning highland barley in the northeastern part of the Qinghai–Tibet Plateau
作者: Zhang X. ; Xu J. ; Kang S.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224 语种: 英语
英文关键词: Aerosols
; Atmospheric radiation
; Biomass
; Factorization
; Hardwoods
; Light extinction
; Mass spectrometers
; Mass spectrometry
; Organic chemicals
; Aerosol mass spectrometry
; Biomass-burning
; Emission factors
; High-resolution mass spectrum
; Light extinction coefficients
; Physical and chemical properties
; Positive Matrix Factorization
; Waliguan
; Particles (particulate matter)
; carbon
; gasoline
; hydrocarbon
; nitrogen
; aerosol composition
; atmospheric pollution
; barley
; biomass burning
; burning
; carbon emission
; condensation
; extinction coefficient
; mass spectrometry
; particle size
; particulate matter
; radiative forcing
; aerosol
; Article
; barley
; biomass
; chemical composition
; cloud
; combustion
; comparative study
; concentration (parameter)
; controlled study
; field study
; greenhouse gas
; high resolution time of flight aerosol mass spectrometry
; meteorology
; particulate matter
; prescribed burning
; priority journal
; radiative forcing
; Tibet
; time of flight mass spectrometry
; traffic pollution
; wood
; China
; Himalayas
; Qinghai-Xizang Plateau
; Hordeum
; Triticum aestivum
学科: Biomass burning
; Emission factor
; PM1
; QTP
; Waliguan
中文摘要: Tibetans in the Qinghai–Tibet Plateau (QTP) commonly burn highland barley during their traditional festivals. However, few studies have been focused on the physical and chemical properties of the particles emitted when such biomass is burned. A comprehensive field study was conducted on the top of Waliguan mountain (3816 m a.s.l.) at the northeastern border of the QTP to provide insights into aerosol characteristics in this remote site during July 2017 during which one of the most important Tibetan festivals (known as “Weisang”) occurred on 5–6 July. Extremely intense aerosol emissions occurred between 23:00 on 5 July and 08:00 on 6 July, and the dominant chemicals emitted in submicron particular matter (PM1) were organic aerosols (OAs) measured through a high-resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS). Fresh biomass burning OA (BBOA) and traffic-related hydrocarbon-like OA (HOA), decomposed by positive matrix factorization analysis on the OA high-resolution mass spectrum, contributed ~90% of the OA during the event. The BBOA mass spectrum was found to be very similar to that of traditional wood identified by HR-ToF-AMS, but with fewer nitrogen-containing species and a higher m/z 60 to 73 signal ratio. The BBOA emission factor during the event was 2.28 g kg−1, which was comparable to emission factors found for burning wheat, grass, dung, and hardwood in previous studies in Himalayas. The particle light extinction coefficient and the cloud condensation nuclei number concentration were clearly increased during the period of burning highland barley, suggesting that the aerosols emitted could significantly affect radiative forcing and cloud properties in the QTP. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160473
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, 730020, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Zhang X.,Xu J.,Kang S.. Chemical characterization of submicron particulate matter (PM1) emitted by burning highland barley in the northeastern part of the Qinghai–Tibet Plateau[J]. Atmospheric Environment,2020-01-01,224