FORMATION OF NITROARENES FROM THE REACTION OF POLYCYCLIC AROMATIC-HYDROCARBONS WITH DINITROGEN PENTAOXIDE
FORMATION OF NITROARENES FROM THE REACTION OF POLYCYCLIC AROMATIC-HYDROCARBONS WITH DINITROGEN PENTAOXIDE
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DOI：
10.1021/es00141a017
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发表时间：
1985-01-01
影响因子：
11.4
通讯作者：
HARGER, WP
中科院分区：
文献类型：
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作者：
PITTS, JN;SWEETMAN, JA;HARGER, WP
在全聚四氟乙烯实验室内，研究了沉积在玻璃纤维过滤器上的六种多环芳烃（PAH）[氟蒽（FL）、芘（PY）、苯并[a]-蒽（BaA）、芘（CHRY）、苯并[a]芘（BaP）和苝（PER）]与空气中气态N2O5的反应。芘、FL、baap和BaA在暴露30分钟后产生了显著的硝基衍生物。在对照暴露于NO2 + HNO3混合物或单独暴露于HNO3时，PY、FL和BaA的硝基衍生物的产率相对于N2O5暴露时非常低。这些多环芳烃对气态N2O5的反应性排序为PY > FL > BaP > BaA > PER > CHRY。这一顺序与之前观察到的沉积在玻璃纤维过滤器上并暴露于NO2 + HNO3气体流中的多环芳烃的硝化或NO2/N2O4混合物对溶液中的多环芳烃的硝化顺序明显不同。与本研究测定的这些多环芳烃与N2O5在CCl4溶液PER > BaP > BaA .gtoreq中的反应性排序也有所不同。y> FL .gtoreq。CHRY。讨论了环境影响。
Reactions of six polycyclic aromatic hydrocarbons (PAH) [fluoranthene (FL), pyrene (PY), benz[a]-anthracene (BaA), chrysene (CHRY), benzo[a]pyrene (BaP), and perylene (PER)], deposited on glass-fiber filters, with gaseous N2O5 in air were investigated in an all-Teflon chamber. Pyrene, FL, BaP, and BaA gave significant yields of nitro derivatives after only a 30-min exposure. In control exposures to NO2 plus HNO3 mixtures or to HNO3 alone, the yields of nitro derivatives of PY, FL, and BaA were very low relative to those in the N2O5 exposures. The reactivity ranking of these PAH toward gaseous N2O5 was PY > FL > BaP > BaA > PER > CHRY. This order is significantly different from that previously observed for nitration of PAH depositied on glass-fiber filters and exposed to a flow of gaseous NO2 + HNO3 or for nitration of PAH in solution by NO2/N2O4 mixtures. It also differs from the reactivity ranking determined in this study for the reaction of these PAH with N2O5 in CCl4 solution of PER > BaP > BaA .gtoreq. PY > FL .gtoreq. CHRY. Environmental implications are disscussed.