DOI: 10.1016/j.atmosenv.2015.06.052
Scopus记录号: 2-s2.0-84949564356
论文题名: Modification in light absorption cross section of laboratory-generated black carbon-brown carbon particles upon surface reaction and hydration
作者: Chen H ; , Hu D ; , Wang L ; , Mellouki A ; , Chen J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 116 起始页码: 253
结束页码: 261
语种: 英语
英文关键词: Black carbon
; Brown carbon
; Light absorption
; Mixing state
; Surface reaction
Scopus关键词: Ammonia
; Atmospheric humidity
; Electromagnetic wave absorption
; Hydration
; Light absorption
; Mixing
; Sulfuric acid
; Water absorption
; Absorption cross sections
; Black carbon
; Brown carbons
; Evolution of morphologies
; High relative humidities
; Low relative humidities
; Mixing state
; Neutralization reaction
; Surface reactions
; ammonia
; black carbon
; brown carbon
; carbon
; sulfuric acid
; triethylamine
; unclassified drug
; water
; absorption
; black carbon
; condensation
; hydration
; relative humidity
; sulfuric acid
; water vapor
; aerosol
; Article
; atmosphere
; chemical modification
; chemical structure
; combustion
; controlled study
; energy dispersive X ray spectroscopy
; evaporation
; humidity
; hydration
; laboratory
; light absorption
; particle size
; particulate matter
; polymerization
; priority journal
; roentgen spectroscopy
; surface tension
; thermal evaporation
; transmission electron microscopy
; uncertainty
; water transport
; water vapor
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: Recent reports indicate that the absorption enhancement of black carbon (BC) and brown carbon (BrC) particles is determined by the evolution of morphology and mixing state during the atmospheric processing. In this study, laboratory-generated BC-BrC mixture particles (BC-BrC) were exposed to sulfuric acid, ammonia/triethylamine, and water vapor sequentially to investigate the alteration in light absorption, morphology and mixing state during simulated atmospheric processing. Condensation of sulfuric acid and exposure to ammonia or triethylamine at 5% relative humidity decreased light absorption cross section of BC-BrC by 13%-26%, but subsequent hydration at 85% relative humidity led to an increase by 5%-20%. Our results show that surface reactions and hydration can significantly alter the light absorption cross section of BC-BrC. Our observation suggests that the restructuring of BC-BrC induced by neutralization reactions on the BC-BrC surface was responsible for the reduction in light absorption cross section at low relative humidity. On the other hand, the formation of an aqueous coating through water uptake by the hydrophilic inorganic coating at high relative humidity caused an absorption enhancement. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81326
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai, China; Institut de Combustion, Aérothermique, Réactivité et Environnement, Centre Nationaldela Recherche Scientifique(ICARE-CNRS), 1C, Avenue de la Recherche Scientifique, Orléans Cedex 02, France; Observatoire des Sciences de l'Univers en Region Centre(OSUC)-Universite d'Orleans, 1A rue de la Férollerie, Orléans Cedex 02, France; Fudan Tyndall Centre, Fudan University, 220 Handan Road, Shanghai, China
Recommended Citation:
Chen H,, Hu D,, Wang L,et al. Modification in light absorption cross section of laboratory-generated black carbon-brown carbon particles upon surface reaction and hydration[J]. Atmospheric Environment,2015-01-01,116