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DOI	10.5194/acp-22-5619-2022
	Oxidation product characterization from ozonolysis of the diterpene ent-kaurene
	Luo, Yuanyuan; Garmash, Olga; Li, Haiyan; Graeffe, Frans; Praplan, Arnaud P.; Liikanen, Anssi; Zhang, Yanjun; Meder, Melissa; Perakyla, Otso; Penuelas, Josep; Yanez-Serrano, Ana Maria; Ehn, Mikael
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	5619
结束页码	5637
卷号	22 期号:8 页码:19
英文摘要	Diterpenes (C20H32) are biogenically emitted volatile compounds that only recently have been observed in ambient air. They are expected to be highly reactive, and their oxidation is likely to form condensable vapors. However, until now, no studies have investigated gas-phase diterpene oxidation. In this paper, we explored the ozonolysis of a diterpene, ent-kaurene, in a simulation chamber. Using state-of-the-art mass spectrometry, we characterized diterpene oxidation products for the first time, and we identified several products with varying oxidation levels, including highly oxygenated organic molecules (HOM), monomers, and dimers. The most abundant monomers measured using a nitrate chemical ionization mass spectrometer were C19H28O8 and C20H30O5, and the most abundant dimers were C38H60O6 and C39H62O6. The exact molar yield of HOM from kaurene ozonolysis was hard to quantify due to uncertainties in both the kaurene and HOM concentrations, but our best estimate was a few percent, which is similar to values reported earlier for many monoterpenes. We also monitored the decrease in the gas-phase oxidation products in response to an increased condensation sink in the chamber to deduce their affinity to condense. The oxygen content was a critical parameter affecting the volatility of products, with four to five O atoms needed for the main monomeric species to condense onto 80 nm particles. Finally, we report on the observed fragmentation and clustering patterns of kaurene in a Vocus proton-transfer-reaction time-of-flight mass spectrometer. Our findings highlight similarities and differences between diterpenes and smaller terpenes during their atmospheric oxidation, but more studies on different diterpenes are needed for a broader view of their role in atmospheric chemistry.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000787900000001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273825
作者单位	University of Helsinki; Tampere University; Harbin Institute of Technology; Finnish Meteorological Institute; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Claude Bernard Lyon 1; Centro de Investigacion Ecologica y Aplicaciones Forestales (CREAF); Centro de Investigacion Ecologica y Aplicaciones Forestales (CREAF); Consejo Superior de Investigaciones Cientificas (CSIC); Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Centro de Investigacion y Desarrollo Pascual Vila (CID-CSIC); CSIC - Instituto de Diagnostico Ambiental y Estudios del Agua (IDAEA)
推荐引用方式 GB/T 7714	Luo, Yuanyuan,Garmash, Olga,Li, Haiyan,et al. Oxidation product characterization from ozonolysis of the diterpene ent-kaurene[J],2022,22(8):19.
APA	Luo, Yuanyuan.,Garmash, Olga.,Li, Haiyan.,Graeffe, Frans.,Praplan, Arnaud P..,...&Ehn, Mikael.(2022).Oxidation product characterization from ozonolysis of the diterpene ent-kaurene.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(8),19.
MLA	Luo, Yuanyuan,et al."Oxidation product characterization from ozonolysis of the diterpene ent-kaurene".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.8(2022):19.