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DOI	10.1016/j.atmosenv.2021.118383
	On the photolysis branching ratio of methyl ethyl ketone
	Zborowska A.G.; MacInnis C.Y.; Ye C.Z.; Osthoff H.D.
发表日期	2021
ISSN	1352-2310
卷号	254
英文摘要	The methyl ethyl ketone (MEK) photolysis branching ratio (α) was re-evaluated by an end product analysis and box model simulations with the Master Chemical Mechanism (MCM). Using light emitting diodes centered at 285 nm or 315 nm, MEK was irradiated in the presence of nitric oxide and oxygen to produce peroxyacetic and peroxypropanoic nitric anhydride, CH3C(O)O2NO2 (PAN) and C2H5C(O)O2NO2 (PPN), which were quantified by gas chromatography. Box model simulations indicated that PPN is partially produced as a secondary product from chemistry initiated by reaction of the hydroxyl radical (OH) with MEK. Under NOx-limited experimental conditions or in the presence of ethane as an OH quencher, the product distribution observed required α = (7 ± 1)% + (1.1 ± 0.7) × 10−4 × (T-298) for 250K < T < 300K (2σ uncertainty), independent of pressure (at pressures > 266 hPa) and consistent with current IUPAC recommendations. © 2021 Elsevier Ltd
关键词	End product study Master chemical mechanism (MCM)Methyl ethyl ketone (MEK)Photolysis branching ratio
语种	英语
scopus关键词	Gas chromatography; Nitric oxide; Photolysis; Box models; End product study; End-product analysis; Master chemical mechanism; Methyl ethyl ketone; Methyl ethyl ketones; Model simulation; NO $-2$; OH$+-$; Photolysis branching ratios; Ketones; 2 butanone; acid anhydride; hydroxyl radical; nitric oxide; oxygen; peracetic acid; peroxypropanoic nitric anhydride; unclassified drug; ethane; hydroxyl radical; ketone; nitric oxide; numerical model; oxygen; photolysis; uncertainty analysis; Article; calculation; chemical analysis; chemical reaction; controlled study; gas chromatography; irradiation; photochemistry; photolysis; physical chemistry; priority journal
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248451
作者单位	Department of Chemistry, 2500 University Drive NW, University of Calgary, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Zborowska A.G.,MacInnis C.Y.,Ye C.Z.,et al. On the photolysis branching ratio of methyl ethyl ketone[J],2021,254.
APA	Zborowska A.G.,MacInnis C.Y.,Ye C.Z.,&Osthoff H.D..(2021).On the photolysis branching ratio of methyl ethyl ketone.ATMOSPHERIC ENVIRONMENT,254.
MLA	Zborowska A.G.,et al."On the photolysis branching ratio of methyl ethyl ketone".ATMOSPHERIC ENVIRONMENT 254(2021).