Impact of Emission Reductions between 1980 and 2020 on Atmospheric Benzo[a]pyrene Concentrations over Europe
Impact of Emission Reductions between 1980 and 2020 on Atmospheric Benzo[a]pyrene Concentrations over Europe
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DOI：
10.1007/s11270-011-0953-z
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发表时间：
2012-03-01
影响因子：
2.9
通讯作者：
Quante, Markus
中科院分区：
文献类型：
--
作者：
Bieser, Johannes;Aulinger, Armin;Quante, Markus
苯并[a]芘（BaP）已被证明是有毒和致癌的。自2010年以来，欧洲联盟正式确定了环境空气中苯并（a）芘浓度的目标值。在这项研究中，苯并（a）芘在欧洲的浓度已经使用修改后的版本的化学传输模型社区多尺度空气质量（CMAQ），其中包括苯并（a）芘的相关反应。CMAQ使用1980年、2000年和2020年的不同排放数据集作为输入数据运行。本研究评估了1980年至2020年BaP浓度的变化，并确定了超过欧洲年度目标值1 ng/m（3）的地区，即波河流域、巴黎大都市区、莱茵-鲁尔地区、维也纳、马德里和莫斯科。此外，减排对大气中苯并（a）芘浓度的影响进行了研究。在1980年至2000年期间，BaP排放量减少的一半是由于工业源的排放量减少。然而，这些减排量仅占地面BaP浓度总减排量的三分之一。进一步的研究结果是，在2000年至2020年期间，大部分（40%）的BaP浓度下降不是由于BaP排放量的变化，而是由于对臭氧形成有影响的标准污染物排放量的变化造成的。
Benzo[a]pyrene (BaP) has been proven to be toxic and carcinogenic. Since 2010, the European Union officially established target values for BaP concentrations in ambient air. In this study BaP concentrations over Europe have been modelled using a modified version of the chemistry transport model Community Multiscale Air Quality (CMAQ) which includes the relevant reactions of BaP. CMAQ has been run using different emission datasets for the years 1980, 2000, and 2020 as input data. In this study, the changes in BaP concentrations between 1980 and 2020 are evaluated and regions which exceed the European annual target value of 1 ng/m(3) are identified, i.e. the Po Valley, the Paris metropolitan area, the Rhine-Ruhr area, Vienna, Madrid, and Moscow. Additionally, the impact of emission reductions on atmospheric concentrations of BaP is investigated. Between 1980 and 2000, half of the BaP emission reductions are due to lower emissions from industrial sources. These emission reductions, however, only contribute to one third of the total ground-level BaP concentration reduction. Further findings are that between 2000 and 2020, a large part (40%) of the BaP concentration reduction is not due to changes in BaP emissions but caused by changes in emissions of criteria pollutants which have an impact on the formation of ozone.