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首页> 外文期刊>Atmospheric environment >Evolution of air pollution source contributions over one decade, derived by PM10 and PM2.5 source apportionment in two metropolitan urban areas in Greece
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Evolution of air pollution source contributions over one decade, derived by PM10 and PM2.5 source apportionment in two metropolitan urban areas in Greece

机译：由希腊两个大都市地区的PM10和PM2.5污染源分配得出的十年中空气污染源贡献的演变

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摘要

Metropolitan Urban areas in Greece have been known to suffer from poor air quality, due to variety of emission sources, topography and climatic conditions favouring the accumulation of pollution. While a number of control measures have been implemented since the 1990s, resulting in reductions of atmospheric pollution and changes in emission source contributions, the financial crisis which started in 2009 has significantly altered this picture. The present study is the first effort to assess the contribution of emission sources to PM10 and PM2.5 concentration levels and their long-term variability (over 5-10 years), in the two largest metropolitan urban areas in Greece (Athens and Thessaloniki). Intensive measurement campaigns were conducted during 2011-2012 at suburban, urban background and urban traffic sites in these two cities. In addition, available datasets from previous measurements in Athens and Thessaloniki were used in order to assess the long-term variability of concentrations and sources. Chemical composition analysis of the 2011-2012 samples showed that carbonaceous matter was the most abundant component for both PM size fractions. Significant increase of carbonaceous particle concentrations and of OC/EC ratio during the cold period, especially in the residential urban background sites, pointed towards domestic heating and more particularly wood (biomass) burning as a significant source. PMF analysis further supported this finding. Biomass burning was the largest contributing source at the two urban background sites (with mean contributions for the two size fractions in the range of 24 -46%). Secondary aerosol formation (sulphate, nitrate & organics) was also a major contributing source for both size fractions at the suburban and urban background sites. At the urban traffic site, vehicular traffic (exhaust and non-exhaust emissions) was the source with the highest contributions, accounting for 44% of PM10 and 37% of PM2.5, respectively. The long-term variability of emission sources in the two cities (over 5-10 years), assessed through a harmonized application of the PMF technique on recent and past year data, clearly demonstrates the effective reduction in emissions during the last decade due to control measures and technological development; however, it also reflects the effects of the financial crisis in Greece during these years, which has led to decreased economic activities and the adoption of more polluting practices by the local population in an effort to reduce living costs. (C) 2017 Elsevier Ltd. All rights reserved.
机译：众所周知，由于排放源的种类繁多，地形和气候条件有利于污染的积累，希腊大都会地区的空气质量较差。尽管自1990年代以来已采取了许多控制措施，从而减少了大气污染并改变了排放源，但从2009年开始的金融危机已大大改变了这一状况。本研究是在希腊两个最大的大都市地区（雅典和塞萨洛尼基）首次评估排放源对PM10和PM2.5浓度水平及其长期变化（5-10年）的贡献。 。 2011-2012年期间，在这两个城市的郊区，城市背景和城市交通站点进行了密集的测量运动。此外，还使用了先前在雅典和塞萨洛尼基进行的测量得到的数据集，以评估浓度和来源的长期变化。 2011-2012年样品的化学成分分析表明，碳含量是两个PM尺寸组分中含量最高的组分。在寒冷时期，特别是在住宅城市背景场所，碳质颗粒物浓度和OC / EC比的显着增加，表明家庭取暖尤其是木材（生物质）燃烧是重要的来源。 PMF分析进一步支持了这一发现。生物质燃烧是两个城市背景站点的最大贡献来源（两个大小部分的平均贡献在24 -46％的范围内）。次级气溶胶的形成（硫酸盐，硝酸盐和有机物）也是在郊区和城市背景站点中尺寸分数的主要来源。在城市交通站点中，车辆交通（排气和非排气排放）是贡献最大的来源，分别占PM10和PM2.5的44％和37％。通过在最近和过去一年的数据上统一应用PMF技术评估，两个城市（5-10年以上）的排放源的长期可变性清楚地表明了由于控制而在过去十年中有效减少了排放措施和技术发展；但是，这也反映了这些年来希腊金融危机的影响，这导致经济活动减少，当地居民采取了更多的污染措施以降低生活成本。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Atmospheric environment》 |2017年第9期|416-430|共15页
  • 作者

    Diapouli E.; Manousakas M.; Vratolis S.; Vasilatou V.; Maggos Th; Saraga D.; Grigoratos Th; Argyropoulos G.; Voutsa D.; Samara C.; Eleftheriadis K.;

  • 作者单位

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

    Aristotle Univ Thessaloniki, Environm Pollut Control Lab, Dept Chem, Thessaloniki 54124, Greece;

    Aristotle Univ Thessaloniki, Environm Pollut Control Lab, Dept Chem, Thessaloniki 54124, Greece;

    Aristotle Univ Thessaloniki, Environm Pollut Control Lab, Dept Chem, Thessaloniki 54124, Greece;

    Aristotle Univ Thessaloniki, Environm Pollut Control Lab, Dept Chem, Thessaloniki 54124, Greece;

    NCSR Demokritos, Inst Nucl & Radiol Sci & Technol Energy & Safety, Athens 15341, Greece;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    PK10/PM2.5; PMF analysis; Biomass burning; Long-term source variability; Urban environment; Greek financial crisis;

    机译：PK10 / PM2.5;PMF分析;生物量燃烧;长期源可变性;城市环境;希腊金融危机;

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