کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9458817 | 1311302 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurements of the kinetics of the OH-initiated oxidation of α-pinene: Radical propagation in the OH+α-pinene+O2+NO reaction system
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measurements of the kinetics of the OH-initiated oxidation of α-pinene: Radical propagation in the OH+α-pinene+O2+NO reaction system Measurements of the kinetics of the OH-initiated oxidation of α-pinene: Radical propagation in the OH+α-pinene+O2+NO reaction system](/preview/png/9458817.png)
چکیده انگلیسی
The mechanism of the OH-initiated oxidation of α-pinene in the presence of NO has been investigated using a discharge-flow system at 5 Torr and 300 K. The OH concentration was monitored as a function of reaction time by laser-induced fluorescence (LIF). The rate constant for the OH+α-pinene was measured to be (6.09±0.30)Ã10â11 cm3 moleculeâ1 sâ1. OH radical regeneration was observed after addition of O2 and NO, and the measured OH concentration profiles were compared to simulations based on both the Master Chemical Mechanism and the Regional Atmospheric Chemistry Mechanism for α-pinene oxidation in order to determine the ability of these mechanisms to describe the observed efficiency of radical propagation. Both models are able to reproduce the observed OH concentrations profiles to within 30%. However, expanding the MCM to include isomerization of the β-hydroxy alkoxy radicals improves the agreement with the experimental observations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 39, Issue 10, March 2005, Pages 1765-1774
Journal: Atmospheric Environment - Volume 39, Issue 10, March 2005, Pages 1765-1774
نویسندگان
Maxine E. Davis, Philip S. Stevens,