globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50561
论文题名:
Speciation of "brown" carbon in cloud water impacted by agricultural biomass burning in eastern China
作者: Desyaterik Y.; Sun Y.; Shen X.; Lee T.; Wang X.; Wang T.; Collett Jr. J.L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:13
起始页码: 7389
结束页码: 7399
语种: 英语
英文关键词: Biomass burning ; Brown carbon ; Cloud water ; Speciation
Scopus关键词: Atmospheric aerosols ; Carbon ; Carbonyl compounds ; Electrospray ionization ; High performance liquid chromatography ; Light ; Mass spectrometers ; Nitrogen compounds ; Phenols ; Biomass-burning ; Brown carbons ; Chemical compositions ; Cloud water ; Elemental compositions ; Speciation ; Time-of-flight mass spectrometers ; TOF mass spectrometer ; Biomass ; atmospheric pollution ; biomass burning ; carbon ; carbonyl compound ; chemical composition ; cloud water ; phenol ; pollutant source ; speciation (chemistry) ; ultraviolet radiation ; China ; Shandong
英文摘要: Despite growing interest in the visible light-absorbing organic component of atmospheric aerosols, referred to as "brown" carbon, our knowledge of its chemical composition remains limited. It is well accepted that biomass burning is one important source of "brown" carbon in the atmosphere. In this study, cloud water samples heavily affected by biomass burning were collected at Mount Tai (1534 m, ASL), located in Shandong province in the North China Plain in summer 2008. The samples were analyzed with high performance liquid chromatography equipped with a UV/Vis absorbance detector immediately followed by electrospray ionization and analysis using a time-of-flight (ToF) mass spectrometer. The high mass resolution and accuracy provided by the ToF mass spectrometer allow determination of the elemental composition of detected ions. Using this approach, the elemental compositions of 16 major light-absorbing compounds, which together accounted for approximately half of measured sample absorption between 300 and 400 nm, were determined. The most important classes of light-absorbing compounds were found to be nitrophenols and aromatic carbonyls. Light absorption over this wavelength range by reduced nitrogen compounds was insignificant in these samples. Key Points Composition of cloud water impacted by biomass burning Nitrophenol derivatives are the major light-absorbing compounds ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63590
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Atmospheric Science, Colorado State University, Campus Delivery 1731, Fort Collins, CO 80523, United States; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Civil and Environmental Engineering, Prairie View AandM University, Prairie View, TX, United States; Department of Environmental Science, Hankuk University of Foreign Studies, Seoul, South Korea; Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong; Environment Research Institute, Shandong University, Jinan, China

Recommended Citation:
Desyaterik Y.,Sun Y.,Shen X.,et al. Speciation of "brown" carbon in cloud water impacted by agricultural biomass burning in eastern China[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(13)
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