Document Details

Document Type : Article In Journal 
Document Title :
Investigating PAH relative reactivity using congener profiles, quinone measurements and back trajectories
تقدير التفاعل النسبى للمواد العضوية الهيدروكربونية عديدة الحلقات بإستخدام قياسات التركيب والكوينون واتجاه الريح والهواء
 
Subject : Enviromental sciences 
Document Language : English 
Abstract : Abstract. Vapour and particle-associated concentrations of 15 polycyclic aromatic hydrocarbons (PAH) and 11 PAH quinones have been measured in winter and summer cam-paigns at the rural site, Weybourne in eastern England. Con-centrations of individual PAH are relatively smaller than av-erage concentrations measured previously at urban sites in the UK. The concentrations of PAH of the air masses origi-nating from southern England and mainland UK are signifi-cantly larger than those from Eastern Europe and the North Atlantic, while quinone to parent PAH ratios show an inverse behaviour, being highest in the more aged North Atlantic po-lar air masses. While concentrations of 1,2-naphthoquinone decline from winter to summer, those of 1,4-naphthoquinone and anthraquinone increase suggesting a photochemical for-mation pathway. A comparison of congener concentration profiles measured at Weybourne with those from an urban source area (Birmingham) reveals differential losses at the rural site, especially evident in fluoranthene : pyrene ratios and consistent with the known rates of vapour phase reac-tions of 3 and 4 ring compounds with hydroxyl radical. The ratios of quinones to their parent PAH at Weybourne are greater than those in the urban source area indicating either more rapid loss processes for PAH, or formation of quinones during advection of the air mass, or probably both. 
ISSN : 1680-7316 
Journal Name : Atmospheric Chemistry And Physics 
Volume : 14 
Issue Number : 14 
Publishing Year : 1435 AH
2014 AD 
Article Type : Article 
Added Date : Monday, May 26, 2014 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
M. S. AlamAlam, M. S.Researcher  
J. M. Delgado-SaboritDelgado-Saborit, J. M.Researcher  
C. StarkStark, C. Researcher  
R. M. HarrisonHarrison, R. M. Researcher r.m.harrison@bham.ac.uk

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