CCPortal
DOI10.5194/acp-19-11635-2019
Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR
Rolletter M.; Kaminski M.; Acir I.-H.; Bohn B.; Dorn H.-P.; Li X.; Lutz A.; Nehr S.; Rohrer F.; Tillmann R.; Wegener R.; Hofzumahaus A.; Kiendler-Scharr A.; Wahner A.; Fuchs H.
发表日期2019
ISSN16807316
起始页码11635
结束页码11649
卷号19期号:18
英文摘要The photooxidation of the most abundant monoterpene, α-pinene, by the hydroxyl radical (OH) was investigated at atmospheric concentrations in the atmospheric simulation chamber SAPHIR. Concentrations of nitric oxide (NO) were below 120 pptv. Yields of organic oxidation products are determined from measured time series giving values of 0:11±0:05, 0:19±0:06, and 0:05±0:03 for formaldehyde, acetone, and pinonaldehyde, respectively. The pinonaldehyde yield is at the low side of yields measured in previous laboratory studies, ranging from 0.06 to 0.87. These studies were mostly performed at reactant concentrations much higher than observed in the atmosphere. Time series of measured radical and trace-gas concentrations are compared to results from model calculations applying the Master Chemical Mechanism (MCM) 3.3.1. The model predicts pinonaldehyde mixing ratios that are at least a factor of 4 higher than measured values. At the same time, modeled hydroxyl and hydroperoxy (HO2) radical concentrations are approximately 25% lower than measured values. Vereecken et al. (2007) suggested a shift of the initial organic peroxy radical (RO2) distribution towards RO2 species that do not yield pinonaldehyde but produce other organic products. Implementing these modifications reduces the model-measurement gap of pinonaldehyde by 20% and also improves the agreement in modeled and measured radical concentrations by 10 %. However, the chemical oxidation mechanism needs further adjustment to explain observed radical and pinonaldehyde concentrations. This could be achieved by adjusting the initial RO2 distribution, but could also be done by implementing alternative reaction channels of RO2 species that currently lead to the formation of pinonaldehyde in the model. © 2019 Author(s).
语种英语
scopus关键词computer simulation; concentration (composition); hydroxyl radical; monoterpene; photooxidation; reaction kinetics; time series analysis; trace gas
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/144150
作者单位Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, Germany; Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden; Federal Office of Consumer Protection and Food Safety, Department 5: Method Standardisation, Resistance to Antibiotics, Berlin, Germany; Institute of Nutrition and Food Sciences, Food Chemistry, University of Bonn, Bonn, Germany; State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China; European University of Applied Sciences, Brühl, Germany
推荐引用方式
GB/T 7714
Rolletter M.,Kaminski M.,Acir I.-H.,et al. Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR[J],2019,19(18).
APA Rolletter M..,Kaminski M..,Acir I.-H..,Bohn B..,Dorn H.-P..,...&Fuchs H..(2019).Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR.Atmospheric Chemistry and Physics,19(18).
MLA Rolletter M.,et al."Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR".Atmospheric Chemistry and Physics 19.18(2019).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Rolletter M.]的文章
[Kaminski M.]的文章
[Acir I.-H.]的文章
百度学术
百度学术中相似的文章
[Rolletter M.]的文章
[Kaminski M.]的文章
[Acir I.-H.]的文章
必应学术
必应学术中相似的文章
[Rolletter M.]的文章
[Kaminski M.]的文章
[Acir I.-H.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。