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On the Origin of AMS 'Cooking Organic Aerosol' at a Rural Site

机译：关于AMS在农村现场“烹饪有机气溶胶”的起源

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摘要

A number of field observations employing aerosol mass spectrometers (AMS) have demonstrated that organic matter rich in monocarboxylic acids and aliphatic carbonyls originating from cooking activities (the COA factor) contributes significantly to ambient organic matter (OM) in urban environments. Little is known about the contribution and nature of COA in rural localities. We studied the correlation of COA with chemical tracers at a rural site in the Po Valley, Italy. Our statistical approach, based on positive matrix factorization (PMF) shows that the COA factor was clearly linked to local emissions of chloride and methanesulfonic acid (MSA), chemical tracers not associated with cooking emissions, or with combustion sources. While the association with Cl is not understood at this stage, the emission of reduced sulfur compounds, aliphatic carbonyls and monocarboxylic acids is consistent with several agricultural practices (e.g., manure storage) and waste disposal systems (e.g., landfills) which characterize the suburban and rural areas of the Po Valley and of other many populated environments. It is concluded that the nature and origins of the AMS COA factor measured at a rural site are complex and include far more than the emissions from food cooking.
机译：使用气溶胶质谱仪（AMS）进行的许多现场观察表明，源自烹饪活动的富含单羧酸和脂肪族羰基的有机物（COA因子）对城市环境中的环境有机物（OM）做出了重大贡献。对农村地区COA的贡献和性质知之甚少。我们在意大利Po Valley的一个农村地区研究了COA与化学示踪剂的相关性。我们基于正矩阵因式分解（PMF）的统计方法表明，COA因子与当地的氯化物和甲磺酸（MSA）排放，与烹饪排放无关的化学示踪剂或燃烧源明显相关。虽然目前尚不了解与氯的关系，但还原性硫化合物，脂肪族羰基和一元羧酸的排放与郊区和郊区的几种农业实践（如粪便存储）和废物处理系统（如垃圾填埋场）一致。蒲山谷和其他许多人口稠密环境的农村地区。结论是，在农村地区测得的AMS COA因子的性质和来源很复杂，其范围远远超过烹饪食物的排放量。

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  • 来源
    《Environmental Science & Technology》 |2015年第24期|13964-13972|共9页
  • 作者

    M. DallOsto; M. Paglione; S. Decesari; M. C. Facchini; C. ODowd; Christian Plass-Duellmer; Roy M. Harrison;

  • 作者单位

    Institut de Ciencies del Mar, CSIC, Pg Maritim de la Barceloneta 37-49, 08003 Barcelona, Spain,National Centre for Atmospheric Science School of Geography, Earth & Environmental Sciences, University of Birmingham Edgbaston, Birmingham, United Kingdom,School of Physics, National University of Ireland, Galway, Ireland;

    National Research Council (CNR), Institute of Atmospheric Sciences and Climate (ISAC), Via Gobetti 101, 40129 Bologna, Italy;

    National Research Council (CNR), Institute of Atmospheric Sciences and Climate (ISAC), Via Gobetti 101, 40129 Bologna, Italy;

    National Research Council (CNR), Institute of Atmospheric Sciences and Climate (ISAC), Via Gobetti 101, 40129 Bologna, Italy;

    School of Physics, National University of Ireland, Galway, Ireland;

    Meteorologische Observatorium Hohenpeissenberg, Albin Schwaiger Weg 10, 82383 Hohenpeissenberg, Germany;

    National Centre for Atmospheric Science School of Geography, Earth & Environmental Sciences, University of Birmingham Edgbaston, Birmingham, United Kingdom,Department of Environmental Sciences/Center of Excellence in Environmental Studies, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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