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DOI	10.5194/acp-20-3669-2020
	Technical note: Determination of binary gas-phase diffusion coefficients of unstable and adsorbing atmospheric trace gases at low temperature - Arrested flow and twin tube method
	Langenberg S.; Carstens T.; Hupperich D.; Schweighoefer S.; Schurath U.
发表日期	2020
ISSN	1680-7316
起始页码	3669
结束页码	3682
卷号	20 期号:6
英文摘要	Gas-phase diffusion is the first step for all heterogeneous reactions under atmospheric conditions. Knowledge of binary diffusion coefficients is important for the interpretation of laboratory studies regarding heterogeneous trace gas uptake and reactions. Only for stable, nonreactive and nonpolar gases do well-established models for the estimation of diffusion coefficients from viscosity data exist. Therefore, we have used two complementary methods for the measurement of binary diffusion coefficients in the temperature range of 200 to 300 K: the arrested flow method is best suited for unstable gases, and the twin tube method is best suited for stable but adsorbing trace gases. Both methods were validated by the measurement of the diffusion coefficients of methane and ethane in helium and air as well as nitric oxide in helium. Using the arrested flow method the diffusion coefficients of ozone in air, dinitrogen pentoxide and chlorine nitrate in helium, and nitrogen were measured. The twin tube method was used for the measurement of the diffusion coefficient of nitrogen dioxide and dinitrogen tetroxide in helium and nitrogen. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	adsorption; atmospheric chemistry; heterogeneity; low temperature; model validation; nitric acid; nitrogen dioxide; reaction kinetics; 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/141450
作者单位	Institut für Physikalische und Theoretische Chemie, University of Bonn, Bonn, Germany; Institut für Meterologie und Klimaforschung, Karlsruher Institut für Technologie, Karlsruhe, Germany; Institut für Umweltphysik, University of Heidelberg, Heidelberg, Germany; Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde/Chirurgie, University of Bonn, Bonn, Germany; UP GmbH, Ibbenbüren, Germany
推荐引用方式 GB/T 7714	Langenberg S.,Carstens T.,Hupperich D.,et al. Technical note: Determination of binary gas-phase diffusion coefficients of unstable and adsorbing atmospheric trace gases at low temperature - Arrested flow and twin tube method[J],2020,20(6).
APA	Langenberg S.,Carstens T.,Hupperich D.,Schweighoefer S.,&Schurath U..(2020).Technical note: Determination of binary gas-phase diffusion coefficients of unstable and adsorbing atmospheric trace gases at low temperature - Arrested flow and twin tube method.Atmospheric Chemistry and Physics,20(6).
MLA	Langenberg S.,et al."Technical note: Determination of binary gas-phase diffusion coefficients of unstable and adsorbing atmospheric trace gases at low temperature - Arrested flow and twin tube method".Atmospheric Chemistry and Physics 20.6(2020).