Biomass burning organic aerosol in Europe and Asia: Molecular composition and impact on air quality

欧洲和亚洲的生物质燃烧有机气溶胶：分子组成及其对空气质量的影响

• 批准号: 416596428
• 负责人: Professor Dr. Hartmut Herrmann
• 金额: --
• 依托单位: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/416596428?language=en
• 关键词: Biomass; burning; organic; aerosol; Europe

Biomass burning emits large amounts of organic aerosol particles into the atmosphere. Important sources are the burning of wood for house heating in Europe and the field burning of agricultural waste during the harvesting season in Asia. These emissions have a strong impact on air quality and can have adverse effects on human health. Besides primary particles which are directly emitted by the fire, the formation of secondary organic aerosols from volatile organic gases plays an important role during transport and chemical aging of smoke plumes. Most of these chemical transformations, as well as the detailed chemical composition of primary and secondary emissions from biomass burning are not well understood at present.In this project, biomass burning emissions and their atmospheric processing will be studied both in a smog chamber and in the real atmosphere.Several European wood and Asian straw types will serve as fuels for the chamber experiments. Their emissions during burning will be chemically processed under different conditions, which are typical e.g. for day- and night atmospheric chemistry, polluted urban and less polluted rural areas, as well as dry and humid air masses. Both the primary as well as the secondary formed particles will then be analysed for their molecular composition. Given the chemical complexity of biomass burning organic aerosols, complementary methods from two well-established labs in Germany and Japan will be combined in this joint project, to allow for an unprecedentedly comprehensive characterisation. The identified compounds and chemical fingerprints from the chamber studies will be compared with real samples from air masses with high impact of wood or agricultural waste burning from Germany and Japan. The goal is to better quantify the impact of biomass burning emissions to air quality, making use of the detailed chemical information from chamber studies and real samples and multivariate statistical models for source apportionment.

生物量燃烧将大量有机气溶胶颗粒散发到大气中。重要的来源是在亚洲的收获季节燃烧欧洲供暖的木材和农业废物的田间燃烧。这些排放对空气质量有很大的影响，并可能对人类健康产生不利影响。除了火灾直接发射的主要颗粒外，挥发性有机气体产生的二次有机气溶胶在烟羽的运输和化学老化过程中起着重要作用。目前尚不清楚这些化学转化中的大多数，以及生物量燃烧的原发和次要排放的详细化学成分。在这个项目中，将在烟雾室和在烟雾室和中研究生物量燃烧的排放及其大气加工真正的气氛。欧洲木材和亚洲稻草类型将作为室内实验的燃料。它们在燃烧过程中的排放将在不同的条件下进行化学处理，例如对于白天和夜间的大气化学，污染的城市和污染较少的农村地区以及干燥和潮湿的空气块。然后，将分析主要的和次级形成的颗粒的分子组成。鉴于生物质燃烧有机气溶胶的化学复杂性，该联合项目将合并来自德国和日本两个良好实验室的补充方法，以实现前所未有的全面表征。将室内研究的发现的化合物和化学指纹与来自德国和日本燃烧的木材或农业废物高影响的空气质量的真实样品进行比较。目的是更好地量化生物质燃烧排放对空气质量的影响，利用室内研究和真实样品的详细化学信息以及用于源分配的多元统计模型。