Collaborative Research: Impact of Aerosol Viscosity, Phase Separation, and Internal Structure on Isoprene-Derived SOA (Secondary Organic Aerosol) Formation

合作研究：气溶胶粘度、相分离和内部结构对异戊二烯衍生 SOA（二次有机气溶胶）形成的影响

• 批准号: 1703535
• 负责人: Jason Surratt
• 金额: $ 29万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1703535&HistoricalAwards=false
• 关键词: Collaborative; Research; Impact; Aerosol; Viscosity

The project strives to minimize the gap between measurements and models that characterize the formation rates, concentrations, and spatial distributions of small organic particles in the atmosphere. Laboratory studies will be conducted in the UNC Environmental Chamber Facility to measure key physicochemical properties of aerosol and gas phase products. The results will be applied to improve models of secondary organic aerosol (SOA) formation to better inform policy decisions about air quality, human health, and climate.The PIs will test the hypothesis that higher viscosity and phase-separation will suppress the reactive uptake of isoprene epoxydiols (IEPOX). The four objectives of the experimental plan to test this hypothesis include the (1) determination of the reactive uptake of IEPOX as a function of particle viscosity; (2) determination of the reactive uptake of IEPOX on particles with complex morphologies; (3) identification of the molecular composition and physicochemical properties of the IEPOX-derived SOA constituents for different viscosities and morphologies; and (4) characterization of volatile products resulting from reactive uptake chemistry of IEPOX.

该项目努力将测量结果与模型之间的差距最小化，这些模型描述了大气中小有机颗粒的形成速率、浓度和空间分布。实验室研究将在北卡罗来纳大学环境室设施进行，以测量气溶胶和气相产品的关键物理化学性质。研究结果将用于改进二次有机气溶胶（SOA）形成的模型，以便更好地为有关空气质量、人类健康和气候的政策决策提供信息。pi将测试高粘度和相分离将抑制异戊二烯环氧二醇（IEPOX）的反应性摄取的假设。测试这一假设的实验计划的四个目标包括：(1)确定ipox的反应性摄取作为颗粒粘度的函数；(2)测定ipox在复杂形态颗粒上的反应性摄取；(3)鉴定不同粘度和形态的iepox衍生SOA组分的分子组成和物理化学性质；(4) ipox反应性吸收化学挥发产物的表征。

项目成果

Heterogeneous Hydroxyl Radical Oxidation of Isoprene-Epoxydiol-Derived Methyltetrol Sulfates: Plausible Formation Mechanisms of Previously Unexplained Organosulfates in Ambient Fine Aerosols

• DOI: 10.1021/acs.estlett.0c00276
• 发表时间: 2020-07-14
• 期刊: ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
• 影响因子: 10.9
• 作者: Chen, Yuzhi;Zhang, Yue;Surratt, Jason D.
• 通讯作者: Surratt, Jason D.

Organosulfate Formation in Proxies for Aged Sea Spray Aerosol: Reactive Uptake of Isoprene Epoxydiols to Acidic Sodium Sulfate

• DOI: 10.1021/acsearthspacechem.2c00156
• 发表时间: 2022-11
• 期刊: ACS Earth and Space Chemistry
• 影响因子: 3.4
• 作者: Madeline E. Cooke;N. C. Armstrong;Ziying Lei;Yuzhi Chen;Cara M. Waters;Yue Zhang-;Nicolas A. Buchenau;Monica Q. Dibley;Isabel R Ledsky;Tessa Szalkowski;Jamy Y. Lee;K. Baumann;Zhenfa Zhang;W. Vizuete;A. Gold;J. Surratt;A. Ault

Isoprene-Derived Organosulfates: Vibrational Mode Analysis by Raman Spectroscopy, Acidity-Dependent Spectral Modes, and Observation in Individual Atmospheric Particles

• DOI: 10.1021/acs.jpca.7b10587
• 发表时间: 2018-01-11
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY A
• 影响因子: 2.9
• 作者: Bondy, Amy L.;Craig, Rebecca L.;Ault, Andrew P.
• 通讯作者: Ault, Andrew P.

Development of a hydrophilic interaction liquid chromatography (HILIC) method for the chemical characterization of water-soluble isoprene epoxydiol (IEPOX)-derived secondary organic aerosol.

• DOI: 10.1039/c8em00308d
• 发表时间: 2018-11-14
• 期刊: ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
• 影响因子: 5.5
• 作者: Cui, Tianqu;Zeng, Zhexi;dos Santos, Erickson O.;Zhang, Zhenfa;Chen, Yuzhi;Zhang, Yue;Rose, Caitlin A.;Budisulistiorini, Sri H.;Collins, Leonard B.;Bodnar, Wanda M.;de Souza, Rodrigo A. F.;Martin, Scot T.;Machado, Cristine M. D.;Turpin, Barbara J.;Gold, Avram;Ault, Andrew P.;Surratt, Jason D.
• 通讯作者: Surratt, Jason D.

Morphology and Viscosity Changes after Reactive Uptake of Isoprene Epoxydiols in Submicrometer Phase Separated Particles with Secondary Organic Aerosol Formed from Different Volatile Organic Compounds

• DOI: 10.1021/acsearthspacechem.1c00156
• 发表时间: 2022-03
• 期刊: ACS Earth and Space Chemistry
• 影响因子: 3.4
• 作者: Ziying Lei;Nicole E. Olson;Yue Zhang;Yuzhi Chen;A. Lambe;Jing Zhang;Natalie J. White;J. Atkin;M. M. Banaszak Holl-M.;Zhenfa Zhang;A. Gold;J. Surratt;A. Ault