DOI: 10.1016/j.atmosenv.2017.11.013
Scopus记录号: 2-s2.0-85034585760
论文题名: Seasonal variability of carbon in humic-like matter of ambient size-segregated water soluble organic aerosols from urban background environment
作者: Frka S ; , Grgić I ; , Turšič J ; , Gini M ; I ; , Eleftheriadis K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 173 起始页码: 239
结束页码: 247
语种: 英语
英文关键词: Biomass burning
; HULIS
; Levoglucosan
; Organic carbon
; Size-segregated aerosols
; WSOC
Scopus关键词: Aerosols
; Atmospheric composition
; Chemical compounds
; Particulate emissions
; Plants (botany)
; Silicon compounds
; Size distribution
; Volatile organic compounds
; Biogenic volatile organic compounds
; Biomass-burning
; HULIS
; Levoglucosan
; Mass median aerodynamic diameters
; Mass size distribution
; Water-soluble organic carbon
; WSOC
; Organic carbon
; organic carbon
; volatile organic compound
; water
; aerosol
; aerosol composition
; biomass burning
; chemical composition
; concentration (composition)
; deciduous forest
; humic substance
; organic carbon
; organic compound
; particle size
; particulate matter
; photochemistry
; seasonal variation
; size distribution
; soil erosion
; urban ecosystem
; volatile organic compound
; aerosol
; Article
; autumn
; environment
; humic like substance
; hypobarism
; liquid
; measurement
; particle size
; particulate matter
; photochemistry
; priority journal
; seasonal variation
; Slovenia
; spring
; summer
; urban area
; winter
; wood
; Ljubljana
; Slovenia
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: Long-term measurements of carbon in HUmic-LIke Substances (HULIS-C) of ambient size-segregated water soluble organic aerosols were performed using a ten-stage low-pressure Berner impactor from December 2014 to November 2015 at an urban background environment in Ljubljana, Slovenia. The mass size distribution patterns of measured species (PM - particulate matter, WSOC - water-soluble organic carbon and HULIS-C) for all seasons were generally tri-modal (primarily accumulation mode) but with significant seasonal variability. HULIS-C was found to have similar distributions as WSOC, with nearly the same mass median aerodynamic diameters (MMADs), except for winter when the HULIS-C size distribution was bimodal. In autumn and winter, the dominant accumulation mode with MMAD at ca. 0.65 μm contributed 83 and 97% to the total HULIS-C concentration, respectively. HULIS-C accounted for a large fraction of WSOC, averaging more than 50% in autumn and 40% in winter. Alternatively, during warmer periods the contributions of ultrafine (27% in summer) and coarse mode (27% in spring) were also substantial. Based on mass size distribution characteristics, HULIS-C was found to be of various sources. In colder seasons, wood burning was confirmed as the most important HULIS source; secondary formation in atmospheric liquid water also contributed significantly, as revealed by the MMADs of the accumulation mode shifting to larger sizes. The distinct difference between the spring and summer ratios of HULIS-C/WSOC in fine particles (ca. 50% in spring, but only 10% in summer) indicated different sources and chemical composition of WSOC in summer (e.g., SOA formation from biogenic volatile organic compounds (BVOCs) via photochemistry). The enlarged amount of HULIS-C in the ultrafine mode in summer suggests that the important contribution was most likely from new particle formation during higher emissions of BVOC due to the vicinity of a mixed deciduous forest; the higher contribution of HULIS-C in the coarse mode demonstrated that beside soil erosion other sources, such as pollen and plant fragments, could also be responsible. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83152
Appears in Collections: 气候变化事实与影响
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作者单位: Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia; Department of Analytical Chemistry, National Institute of Chemistry, Ljubljana, Slovenia; Environmental Agency of the Republic of Slovenia, Ljubljana, Slovenia; Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, N.C.S.R. “Demokritos”, Athens, Greece
Recommended Citation:
Frka S,, Grgić I,, Turšič J,et al. Seasonal variability of carbon in humic-like matter of ambient size-segregated water soluble organic aerosols from urban background environment[J]. Atmospheric Environment,2018-01-01,173