Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach
Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach
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DOI：
10.5194/acp-14-6159-2014
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发表时间：
2014-01-01
影响因子：
6.3
通讯作者：
Prevot, A. S. H.
中科院分区：
文献类型：
--
作者：
Crippa, M.;Canonaco, F.;Prevot, A. S. H.
有机气溶胶（OA）是亚微米颗粒物（PM 1）的主要组成部分之一，由不同来源排放的各种化合物组成。2008年（5月至6月和9月至10月）和2009年（2月至3月），在欧洲气溶胶云气候和空气质量相互作用综合项目（EUCAARI）和欧洲监测和评估计划（EMEP）的密集活动框架内，开展了三次密集测量现场活动，调查整个欧洲的气溶胶化学成分。在本文中，我们专注于识别的主要有机气溶胶源，我们定义了一个标准化的方法来执行源解析使用正矩阵分解（PMF）与多线性引擎（ME-2）的Aerodyne气溶胶质谱仪（AMS）数据。我们的源解析程序进行了测试，并应用于25个数据集占两个城市，几个农村和偏远地区和两个高海拔地区，因此，它可能是适合AMS相关的环境数据集的治疗。对于大多数的网站，四个有机成分检索，显着改善以前的源解析结果，只有在初级和次级OA源分离是可能的。通常，我们的解决方案包括两种主要的OA来源，即烃类OA（HOA）和生物质燃烧OA（BBOA），以及两种次要OA组分，即半挥发性氧化OA（SV-OOA）和低挥发性氧化OA（LV-OOA）。对于特定地点，还将与烹饪有关的污染源（COA）和与海洋有关的污染源（MSA）分开。最后，我们的工作提供了一个大的概述在欧洲的有机气溶胶源和一组有趣的高度时间分辨的数据建模的目的。
Organic aerosols (OA) represent one of the major constituents of submicron particulate matter (PM1) and comprise a huge variety of compounds emitted by different sources. Three intensive measurement field campaigns to investigate the aerosol chemical composition all over Europe were carried out within the framework of the European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions (EUCAARI) and the intensive campaigns of European Monitoring and Evaluation Programme (EMEP) during 2008 (May-June and September-October) and 2009 (February-March). In this paper we focus on the identification of the main organic aerosol sources and we define a standardized methodology to perform source apportionment using positive matrix factorization (PMF) with the multilinear engine (ME-2) on Aerodyne aerosol mass spectrometer (AMS) data. Our source apportionment procedure is tested and applied on 25 data sets accounting for two urban, several rural and remote and two high altitude sites; therefore it is likely suitable for the treatment of AMS-related ambient data sets. For most of the sites, four organic components are retrieved, improving significantly previous source apportionment results where only a separation in primary and secondary OA sources was possible. Generally, our solutions include two primary OA sources, i.e. hydrocarbon-like OA (HOA) and biomass burning OA (BBOA) and two secondary OA components, i.e. semi-volatile oxygenated OA (SV-OOA) and low-volatility oxygenated OA (LV-OOA). For specific sites cooking-related (COA) and marine-related sources (MSA) are also separated. Finally, our work provides a large overview of organic aerosol sources in Europe and an interesting set of highly time resolved data for modeling purposes.