Atmospheric Chemistry of Three C10 Alkanes
Atmospheric Chemistry of Three C10 Alkanes
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DOI：
10.1021/jp010909j
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发表时间：
2001-07
影响因子：
2.9
通讯作者：
S. M. Aschmann;J. Arey;R. Atkinson
中科院分区：
文献类型：
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作者：
S. M. Aschmann;J. Arey;R. Atkinson
在296 ± 2K和常压下，研究了OH自由基与C10烷烃正癸烷、3，4-二乙基己烷和正丁基环己烷的气相反应动力学和产物。气相色谱-火焰离子化检测器（GC-FID）和气相色谱-质谱联用（GC-MS）用于识别和定量硝酸烷基酯和羰基产物，原位大气压电离串联质谱法用于识别和定量（相对于内标物）羟基羰基和羟基硝酸酯产物。用相对速率法测定了OH自由基与正癸烷、3，4-二乙基己烷和正丁基环己烷反应的速率常数，（单位为10-12 cm ~ 3分子-1 s ~（-1））分别为12.5 ± 0.4，7.43 ± 0.48和15.8 ± 0.6，其中误差不包括正辛烷参比化合物的速率常数的不确定性。经鉴定和定量的产物有：硝酸2-、3-、4-和5-癸酯，羟基乙酸，硝酸异辛酯。
Kinetics and products of the gas-phase reactions of OH radicals with the C10-alkanes n-decane, 3,4-diethylhexane and n-butylcyclohexane have been investigated at 296 ± 2 K and atmospheric pressure of air. Gas chromatography with flame ionization detection (GC−FID) and combined gas chromatography−mass spectrometry (GC-MS) were used to identify and quantify alkyl nitrate and carbonyl products, and in situ atmospheric pressure ionization tandem mass spectrometry was employed to identify and quantify, relative to internal standards, hydroxycarbonyl and hydroxynitrate products. Using a relative rate method, rate constants for reactions of the OH radical with n-decane, 3,4-diethylhexane and n-butylcyclohexane were measured and (in units of 10-12 cm3 molecule-1 s-1) were 12.5 ± 0.4, 7.43 ± 0.48 and 15.8 ± 0.6, respectively, where the errors do not include uncertainties in the rate constant for the n-octane reference compound. The products identified and quantified were: 2-, 3-, 4-, and 5-decyl nitrate, hydroxyc...