NITROARENE PRODUCTS FROM THE GAS-PHASE REACTIONS OF VOLATILE POLYCYCLIC AROMATIC-HYDROCARBONS WITH THE OH RADICAL AND N2O5
NITROARENE PRODUCTS FROM THE GAS-PHASE REACTIONS OF VOLATILE POLYCYCLIC AROMATIC-HYDROCARBONS WITH THE OH RADICAL AND N2O5
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DOI：
10.1002/kin.550210906
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发表时间：
1989-09-01
影响因子：
1.5
通讯作者：
ASCHMANN, SM
中科院分区：
文献类型：
--
作者：
AREY, J;ZIELINSKA, B;ASCHMANN, SM
报道了在有NOx存在的情况下，氧化亚氮(N2O5)和羟基自由基气相反应生成的硝基芳烃产物。计算了这些多环芳烃(PAH)的大气寿命，以及萘、1-和2-甲基萘、联苯、荧蒽、芘和乙基菲的大气寿命，结果表明，这些多环芳烃的主要损失过程是与OH自由基的反应，除了含有一个外部环戊环的外环戊二烯、菲和乙基菲。对于后一类多环芳烃，与硝酸根的反应，以及榄苯和乙酰菲与臭氧的反应，也被认为是重要的大气损失过程。在环境室研究中观察到的作为对大气重要的多环芳烃气相反应产物的硝基芳烃与在加利福尼亚州采集的环境空气样品中测量的硝基芳烃进行了比较。结论是，尽管硝基芳烃以较低的产率形成(。5%)，大气中硝基芳烃的形成可能对环境中的硝基芳烃浓度有很大影响。
The nitroarene products of the gas-phase reactions of acenaphthylene, acenaphthene, phenanthrene, and anthracene-d10 with N2O5 and the OH radical (in the presence of NOx) are reported. The calculated atmospheric lifetimes of these polycyclic aromatic hydrocarbons (PAH), as well as those of naphthalene, 1- and 2-methylnaphthalene, biphenyl, fluoranthene, pyrene, and acephenanthrylene, show that reaction with the OH radical is the dominant loss process for these PAH, with the exception of acenaphthylene, acenaphthene, and acephenanthrylene which contain an external cyclopenta-fused ring. For these latter PAH, reaction with the NO3 radical, and for acenaphthylene and acephenanthrylene reaction with O3, are also expected to be important atmospheric loss processes. The nitroarenes observed as products of the atmospherically-important gas-phase reactions of the PAH in environmental chamber studies are compared with the nitroarenes measured in ambient air samples collected in California. It is concluded that although nitroarenes are formed in low yields (.ltorsim. 5%) from the OH radical-initiated reactions of the PAH, atmospheric formation of nitroarenes may contribute significantly to ambient nitroarene concentrations.