DOI: 10.1016/j.atmosenv.2014.07.056
Scopus记录号: 2-s2.0-84906348448
论文题名: Polar organic marker compounds in atmospheric aerosol in the Po Valley during the Supersito campaigns - Part 2: Seasonal variations of sugars
作者: Pietrogrande M ; C ; , Bacco D ; , Visentin M ; , Ferrari S ; , Casali P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 97 起始页码: 215
结束页码: 225
语种: 英语
英文关键词: Atmospheric aerosol
; Biogenic emissions
; Biomass burning
; Po Valley
; Seasonal trend
; Sugars
Scopus关键词: Atmospheric aerosols
; Atmospheric thermodynamics
; Biocatalysts
; Glucose
; Polyols
; Principal component analysis
; Sugars
; Sugars
; Biogenic emission
; Biomass combustion
; Biomass-burning
; Experimental campaign
; Low-molecular-weight carboxylic acid
; Organic marker compounds
; PO Valley
; Seasonal trends
; Seasonal variation
; Biomass
; Atmospheric aerosols
; 2 oxoglutaric acid
; adipic acid
; arabinitol
; arabinose
; azelaic acid
; benzoic acid
; carboxylic acid
; erythritol
; galactosan
; galactose
; glucose
; glutaric acid
; glycolic acid
; levoglucosan
; maleic acid
; malic acid
; malonic acid
; mannitol
; mannosan
; mannose
; organic compound
; phthalic acid
; pimelic acid
; pinonic acid
; ribitol
; succinic acid
; sucrose
; sugar
; trehalose
; unclassified drug
; biological marker
; carbohydrate derivative
; carboxylic acid derivative
; molecular marker
; sugar alcohol
; aerosol
; biomarker
; biomass
; biomass burning
; carbon
; carboxylic acid
; combustion
; concentration (composition)
; molecular analysis
; organic compound
; seasonal variation
; seasonality
; sugar
; temporal variation
; aerosol composition
; biogenic emission
; particulate matter
; tracer
; aerosol
; article
; autumn
; biomass
; chemical composition
; combustion
; ecosystem
; heating
; Italy
; molecular weight
; particulate matter
; priority journal
; seasonal variation
; spring
; summer
; winter
; Article
; atmosphere
; biomass production
; biosphere
; carbon cycling
; cold exposure
; concentration (parameters)
; controlled study
; growing season
; limit of detection
; nonhuman
; photooxidation
; photosynthesis
; plant growth
; principal component analysis
; rural area
; solar radiation
; temperature
; urban area
; vegetation
; warming
; Italy
; Po Valley
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: Four intensive experimental campaigns were conducted in the Po Valley (Northern Italy) in different seasons through the years 2012 and 2013, in the framework of the "Supersito" project. As a part of a study on polar tracers in atmospheric PM2.5, the present paper describes the abundances and temporal variations of sugars, as primary biogenic biomarkers, being the major form of photosynthetically assimilated carbon in the biosphere. The study includes primary saccharides (glucose, sucrose, arabinose, galactose and mycose), sugar alcohols (arabitol and mannitol) and anhydrosugars (levoglucosan, galactosan and mannosan).Strong seasonality was observed with total sugars concentration nearly 10 times higher in the cold seasons (mean 377ngm-3) than in summer/spring (mean 36ngm-3). Also sugar composition profiles varied seasonally, being dominated by anhydrosugars in fall and winter, i.e., levoglucosan (mean 271ngm-3), followed by mannosan (mean 53ngm-3) and galactosan (mean 29ngm-3). These data indicate that in the cold seasons the biomass combustion for domestic heating is the main sugar source representing nearly 94% of the total saccharides mass measured in PM2.5. Accordingly, glucose, arabinose and galactose show the highest concentrations, since these saccharides are also emitted during the burning process as uncombusted biomass materials. In spring/summer the primary saccharides are dominant in PM2.5, with mannitol as the most abundant, followed by mycose, glucose and ribitol that are emitted by the terrestrial biomass, reflecting the higher sugar production and utilization by the ecosystem in the warm seasons.These results were confirmed by investigating other molecular markers, such as low-molecular-weight carboxylic acids and n-alkane homologs. Principal Component Analysis was applied to the data to extract three PCs that may be attributed to different saccharide sources, such as biomass burning and primary bio aerosol. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81160
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 17/19, I-44100 Ferrara, Italy; Regional Agency of Prevention and Environment ARPA - Emilia-Romagna, Italy
Recommended Citation:
Pietrogrande M,C,, Bacco D,et al. Polar organic marker compounds in atmospheric aerosol in the Po Valley during the Supersito campaigns - Part 2: Seasonal variations of sugars[J]. Atmospheric Environment,2014-01-01,97