Atmospheric fate of two relevant unsaturated ketoethers: kinetics, products and mechanisms for the reaction of hydroxyl radicals with (<i>E</i>)-4-methoxy-3-buten-2-one and (1<i>E</i>)-1-methoxy-2-methyl-1-penten-3-one

doi:10.5194/acp-20-8939-2020

GSTDTAP > 地球科学

DOI	10.5194/acp-20-8939-2020
	Atmospheric fate of two relevant unsaturated ketoethers: kinetics, products and mechanisms for the reaction of hydroxyl radicals with (E)-4-methoxy-3-buten-2-one and (1E)-1-methoxy-2-methyl-1-penten-3-one
	Rodrigo Gastón Gibilisco, Ian Barnes, Iustinian Gabriel Bejan, and Peter Wiesen
	2020-07-29
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	The kinetics of the gas phase reactions of hydroxyl radicals with two unsaturated ketoethers (UKEs) at (298±3) K and 1 atm of synthetic air have been studied for the first time using the relative-rate technique in an environmental reaction chamber by in situ Fourier-transform infrared spectroscopy (FTIR). The rate coefficients obtained using propene and isobutene as reference compounds were (in units of 10⁻¹⁰ cm³ molecule⁻¹ s⁻¹) as follows: k_TMBO (OH + (E)-4-methoxy-3-buten-2-one) = (1.41±0.11) and k_MMPO (OH + (1E)-1-methoxy-2-methyl-1-penten-3-one) = (3.34±0.43). In addition, quantification of the main oxidation products in the presence of NO_x has been performed, and degradation mechanisms for these reactions were developed. Methyl formate, methyl glyoxal, peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN) were identified as main reaction products and quantified for both reactions. The results of the present study provide new insights regarding the contribution of these multifunctional volatile organic compounds (VOCs) in the generation of secondary organic aerosols (SOAs) and long-lived nitrogen containing compounds in the atmosphere. Atmospheric lifetimes and implications are discussed in light of the obtained results.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/286593
专题	地球科学
推荐引用方式 GB/T 7714	Rodrigo Gastón Gibilisco, Ian Barnes, Iustinian Gabriel Bejan, and Peter Wiesen. Atmospheric fate of two relevant unsaturated ketoethers: kinetics, products and mechanisms for the reaction of hydroxyl radicals with (E)-4-methoxy-3-buten-2-one and (1E)-1-methoxy-2-methyl-1-penten-3-one[J]. Atmospheric Chemistry and Physics,2020.
APA	Rodrigo Gastón Gibilisco, Ian Barnes, Iustinian Gabriel Bejan, and Peter Wiesen.(2020).Atmospheric fate of two relevant unsaturated ketoethers: kinetics, products and mechanisms for the reaction of hydroxyl radicals with (E)-4-methoxy-3-buten-2-one and (1E)-1-methoxy-2-methyl-1-penten-3-one.Atmospheric Chemistry and Physics.
MLA	Rodrigo Gastón Gibilisco, Ian Barnes, Iustinian Gabriel Bejan, and Peter Wiesen."Atmospheric fate of two relevant unsaturated ketoethers: kinetics, products and mechanisms for the reaction of hydroxyl radicals with (E)-4-methoxy-3-buten-2-one and (1E)-1-methoxy-2-methyl-1-penten-3-one".Atmospheric Chemistry and Physics (2020).