Chemical Science p. 8390 - 8398 (2019)
Update date:2022-08-02
Topics:
Upshur, Mary Alice
Vega, Marvin M.
Bé, Ariana Gray
Chase, Hilary M.
Zhang, Yue
Tuladhar, Aashish
Chase, Zizwe A.
Fu, Li
Ebben, Carlena J.
Wang, Zheming
Martin, Scot T.
Geiger, Franz M.
Thomson, Regan J.
Atmospheric aerosol-cloud interactions remain among the least understood processes within the climate system, leaving large uncertainties in the prediction of future climates. In particular, the nature of the surfaces of aerosol particles formed from biogenic terpenes, such as α-pinene, is poorly understood despite the importance of surface phenomena in their formation, growth, radiative properties, and ultimate fate. Herein we report the coupling of a site-specific deuterium labeling strategy with vibrational sum frequency generation (SFG) spectroscopy to probe the surface C-H oscillators in α-pinene-derived secondary organic aerosol material (SOM) generated in an atmospheric flow tube reactor. Three α-pinene isotopologues with methylene bridge, bridgehead methine, allylic, and vinyl deuteration were synthesized and their vapor phase SFG spectra were compared to that of unlabeled α-pinene. Subsequent analysis of the SFG spectra of their corresponding SOM revealed that deuteration of the bridge methylene C-H oscillators present on the cyclobutane ring in α-pinene leads to a considerable signal intensity decrease (ca. 30-40%), meriting speculation that the cyclobutane moiety remains largely intact within the surface bound species present in the SOM formed upon α-pinene oxidation. These insights provide further clues as to the complexity of aerosol particle surfaces, and establish a framework for future investigations of the heterogeneous interactions between precursor terpenes and particle surfaces that lead to aerosol particle growth under dynamically changing conditions in the atmosphere.
View MoreJIAXING SUNS INTERNATIONAL TRADE CO LTD
Contact:18367306858
Address:No.123,Huixin Avenue,Huimin Dist
Jiangsu Hualun Chemical Industry Co., Ltd
website:http://www.hualunchem.com
Contact:+86-0514-86464168 86507985
Address:39# Middle Renmin Road, Dinghuo Town
Hubei Xinjing New Material Co.,Ltd
Contact:+86-27-83313147
Address:Room402.#Bthe 7th,Headquarter of Huifeng Corporation Qiaokou District,Wuhan China
JIANGXI AIFEIMU TECHNOLOGY CO.,LTD
Contact:+86-570-6040289
Address:FINECHEMICAL PARK,ZIBU TOWN,WANNIAN COUNTY,JIANGXI PROV.,CHINA,ZIP
GUANGZHOU MEDCAN PHARMATECH LTD
website:http://www.gzmedcan.com
Contact:+86-20-82519649
Address:Building J,Room 101,1 JiangtashanRd,Guang Zhou Science City,Guang Zhou ,China
Doi:10.1039/jr9530003761
(1953)Doi:10.1021/jo000870z
(2000)Doi:10.1039/c4dt02448f
(2015)Doi:10.1021/jm980645y
(2000)Doi:10.1023/B:RUCB.0000037855.13096.6e
(2004)Doi:10.1021/ja00732a030
(1971)