RAPID: Nanoparticle Growth from Anthropogenic Volatile Organic Compounds (AVOC) during CLOUD11

RAPID：CLOUD11 期间人为挥发性有机化合物 (AVOC) 产生的纳米颗粒生长

• 批准号: 1649147
• 负责人: Rainer Volkamer
• 金额: $ 10.05万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1649147&HistoricalAwards=false
• 关键词: RAPID; Nanoparticle; Growth; Anthropogenic; Volatile

This project will enable participation in the CLOUD11 field campaign that will take place at the CLOUD chamber facility at CERN in Geneva Switzerland (Sept - Nov 2016). The CLOUD facility is unique because of its cleanliness, unique control over a wide range of environmental conditions, demonstrated ability to realize experimental conditions that closely resemble those found in the atmosphere, and access to a large array of state-of-the-art instrumentation provided by the Science team to study gas- and aerosol composition at the molecular level. The broader impacts of this research include improved knowledge about the sources of aerosols relevant to air quality and climate. The CLOUD11 field campaign has the following objectives: (1) Conduct nucleation experiments of anthropogenic volatile organic compounds (AVOC); (2) Conduct nucleation experiments involving biogenic volatile organic compounds (BVOC); and (3) Conduct experiments that focus on OH radical initiated oxidation of AVOC and BVOC, and varying concentrations of SO2, NOx, NH3, and relative humidity (RH). This research supports the deployment of a CE-DOAS instrument to measure glyoxal and methylglyoxal, major first generation oxidation products from aromatic AVOC. This effort includes the investigation of the "salting-in" of volatile (and soluble) molecules as a mechanism to overcome the Kelvin effect towards the efficient growth of neutral stabilized nanoclusters. A systematic study of RH driven "salting-in" in context of nanocluster growth holds potential as a "probe" to trace how much water is associated with nanoparticles and whether they can grow to sizes where they can act as cloud condensation nuclei (CCN) influencing the formation of clouds.

该项目将支持参与将在瑞士日内瓦 CERN 的 CLOUD 室设施（2016 年 9 月至 11 月）举行的 CLOUD11 现场活动。 CLOUD 设施的独特之处在于其清洁度、对各种环境条件的独特控制、实现与大气中的条件非常相似的实验条件的能力，以及使用大量最先进仪器的能力由科学团队提供，用于在分子水平上研究气体和气溶胶成分。 这项研究的更广泛影响包括提高对与空气质量和气候相关的气溶胶来源的了解。 CLOUD11野外活动有以下目标：（1）进行人为挥发性有机化合物（AVOC）成核实验； （2）开展生物挥发性有机化合物（BVOC）成核实验； (3) 进行侧重于 OH 自由基引发的 AVOC 和 BVOC 氧化以及不同浓度的 SO2、NOx、NH3 和相对湿度 (RH) 的实验。 这项研究支持部署 CE-DOAS 仪器来测量乙二醛和甲基乙二醛，这是芳香族 AVOC 中主要的第一代氧化产物。 这项工作包括研究挥发性（和可溶性）分子的“盐溶”，作为克服开尔文效应以实现中性稳定纳米团簇有效生长的机制。在纳米团簇生长的背景下，对 RH 驱动的“盐溶”进行系统研究，具有作为“探针”的潜力，可以追踪纳米颗粒与水的含量，以及它们是否可以生长到可以充当云凝聚核 (CCN) 的尺寸影响云的形成。

项目成果

Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors

由硫酸、氨和生物蒸气形成多组分新颗粒

• DOI: 10.1126/sciadv.aau5363
• 发表时间: 2018-12-01
• 期刊: Science Advances
• 影响因子: 13.6
• 作者: K. Lehtipalo;Chao Yan;L. Dada;Federico Bianchi;M. Xiao;R. Wagner;D. Stolzenburg;L. Ahonen;A. Amo
• 通讯作者: A. Amo

Molecular Composition and Volatility of Nucleated Particles from α-Pinene Oxidation between −50 °C and +25 °C

α-蒎烯氧化成核颗粒在 50 °C 至 25 °C 温度下的分子组成和挥发性

• DOI: 10.1021/acs.est.9b03265
• 发表时间: 2019-10
• 期刊: Environmental Science & Technology
• 影响因子: 11.4
• 作者: Ye, Qing;Wang, Mingyi;Hofbauer, Victoria;Stolzenburg, Dominik;Chen, Dexian;Schervish, Meredith;Vogel, Alexander;Mauldin, Roy L.;Baalbaki, Rima;Brilke, Sophia;et al
• 通讯作者: et al

Enhanced growth rate of atmospheric particles from sulfuric acid

硫酸导致大气颗粒物生长速度加快

• DOI: 10.5194/acp-2019-755-supplement
• 发表时间: 2019-11-15
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: D. Stolzenburg;M. Simon;A. Ranjithkumar;A. Kürten;K. Lehtipalo;H. Gordon;S. Ehrhart;Henning Finkenzeller
• 通讯作者: Henning Finkenzeller