DOI: 10.1016/j.atmosenv.2013.12.022
Scopus记录号: 2-s2.0-84892864288
论文题名: Polar organic marker compounds in atmospheric aerosol in the Po Valley during the Supersito campaigns - Part 1: Low molecular weight carboxylic acids in cold seasons
作者: Pietrogrande M ; C ; , Bacco D ; , Visentin M ; , Ferrari S ; , Poluzzi V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 86 起始页码: 164
结束页码: 175
语种: 英语
英文关键词: Anthropogenic and biogenic emission sources
; Atmospheric aerosol
; Cold seasons
; Low molecular weight carboxylic acids
; Po Valley
Scopus关键词: Anthropogenic and biogenic emissions
; Atmospheric concentration
; Atmospheric conditions
; Cold season
; Dominant contributions
; Low-molecular weight carboxylic acids
; Organic marker compounds
; PO Valley
; Atmospheric aerosols
; Atmospheric thermodynamics
; Fatty acids
; Industrial emissions
; Molecular weight
; Urban growth
; adipic acid
; adipic acid derivative
; azelaic acid
; carbohydrate derivative
; carboxylic acid derivative
; dicarboxylic acid derivative
; fatty acid
; glutaric acid
; glycolic acid
; maleic acid
; malic acid
; malonic acid
; phthalic acid
; pimelic acid
; succinic acid
; aerosol composition
; anthropogenic effect
; atmospheric pollution
; biogenic emission
; biomass burning
; carboxylic acid
; heating
; molecular analysis
; organic compound
; spatiotemporal analysis
; aerosol
; article
; autumn
; biomass
; concentration (parameters)
; environmental monitoring
; environmental temperature
; heating
; human activities
; industry
; Italy
; meteorology
; molecular weight
; motor vehicle
; particulate matter
; photochemistry
; precipitation
; priority journal
; rural area
; secondary organic aerosol
; solar radiation
; traffic
; urban area
; winter
; 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: In the framework of the "Supersito" project, three intensive experimental campaigns were conducted in the Po Valley (Northern Italy) in cold seasons, such as late autumn, pre-winter and deep-winter, over three years from 2011 to 2013. As a part of a study on polar marker compounds, including carboxylic acids, sugar derivatives and lignin phenols, the present study reports a detailed discussion on the atmospheric concentrations of 14 low molecular weight carboxylic acids, mainly dicarboxylic and oxo-hydroxy carboxylic acids, as relevant markers of primary and secondary organic aerosols.PM2.5 samples were collected in two monitoring sites, representing urban and rural background stations. The total quantities of carboxylic acids were 262, 167 and 249ngm-3 at the urban site and 308, 115, 248ngm-3 at the rural site in pre-winter, fall and deep-winter, respectively. These high concentrations can be explained by the large human emission sources in the urbanized region, combined with the stagnant atmospheric conditions during the cold seasons that accumulate the organic precursors and accelerate the secondary atmospheric reactions. The distribution profiles of the investigated markers suggest the dominant contributions of primary anthropogenic sources, such as traffic, domestic heating and biomass burning. These results are confirmed by comparison with additional emission tracers, such as anhydro-saccharides for biomass burning and fatty acids originated from different anthropogenic sources. In addition, some secondary constituents were detected in both sites, as produced by in situ photo-chemical reactions from both biogenic (e.g. pinonic acid) and anthropogenic precursors (e.g. phthalic and adipic acids). The impact of different sources from human activities was elucidated by investigating the week pattern of carboxylic and fatty acid concentrations. The weekly trends of analytes during the warmer campaign (fall 2012; mean temperature: 12°C) may be related to emissions from motor vehicle traffic and industrial activities. Otherwise, the random pattern of the markers suggests the prevalent contribution of primary emissions from residential heating in the colder deep-winter (mean temperature: 5°C). © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80755
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
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 1: Low molecular weight carboxylic acids in cold seasons[J]. Atmospheric Environment,2014-01-01,86