تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
التفاعل الكيميائى وجهد النقل الطويل للمواد الهيدروكربونية متعددة الحلقات - مقالة مرجعية
Chemical reactivity and long-range transport potential of polycyclic aromatic hydrocarbons - a review
 
الموضوع : علوم البيئة 
لغة الوثيقة : الانجليزية 
المستخلص : Polycyclic aromatic hydrocarbons (PAHs) are of considerable concern due to their well-recognised toxicity and especially due to the carcinogenic hazard which they present. PAHs are semi-volatile and therefore partition between vapour and condensed phases in the atmosphere and both the vapour and particulate forms undergo chemical reactions. This article briefly reviews the current understanding of vapour–particle partitioning of PAHs and the PAH deposition processes, and in greater detail, their chemical reactions. PAHs are reactive towards a number of atmospheric oxidants, most notably the hydroxyl radical, ozone, the nitrate radical (NO3) and nitrogen dioxide. Rate coefficient data are reviewed for reactions of lower molecular weight PAH vapour with these species as well as for heterogeneous reactions of higher molecular weight compounds. Whereas the data for reactions of the 2–3-ring PAH vapour are quite extensive and generally consistent, such data are mostly lacking for the 4-ring PAHs and the heterogeneous rate data (5 and more rings), which are dependent on the substrate type and reaction conditions, are less comprehensive. The atmospheric reactions of PAH lead to the formation of oxy and nitro derivatives, reviewed here, too. Finally, the capacity of PAHs for long range transport and the results of numerical model studies are described. Research needs are identified. 
ردمد : 0306-0012 
اسم الدورية : Chemical Society Reviews 
المجلد : 42 
العدد : 13 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Tuesday, January 28, 2014 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
Ian J. KeyteKeyte, Ian J.باحث r.m.harrison@bham.ac.uk
Roy M. HarrisonHarrison, Roy M.باحث r.m.harrison@bham.ac.uk
Gerhard LammelLammel, Gerhard باحث  

الملفات

اسم الملفالنوعالوصف
 36459.pdf pdfChemical reactivity and long-range transport potential of polycyclic aromatic hydrocarbons – a review

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