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Source identification and reactivity study on atmosphere polycyclic aromatic hydrocarbons

Jang, Eun-Hwa (2015)
Ph.D. thesis, University of Birmingham.

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Abstract

Polycyclic aromatic hydrocarbons (PAH) are ubiquitous compounds produced through incomplete combustion processes from various sources in different proportions. They are of concern because of their recognized mutagenic and carcinogenic properties. There are a number of receptor modelling (RM) studies that identify sources of urban atmospheric PAH, despite concerns over the application of RM to the relatively reactive PAH. This thesis utilizes Positive Matrix Factorization (PMF) with extensive PAH datasets, and compares the results with local and national emission inventories. An atmospheric chemical reactivity study for PAH is also investigated; highlighting the importance of taking reactivity into consideration when applying source apportionment models.

The results demonstrate that traffic sources are significantly responsible for the PAH mass (∑PAH) at UK urban sites throughout the year. A substantial fraction of benzo[a]pyrene emissions was apportioned to solid fossil fuel combustion sources, showing significant seasonal variations.

A conceptual simulation of PAH ratios has been investigated using urban and rural data. Results were in good agreement between simulated ratios and empirically obtained values. The results provide a better understanding of PAH reactivity and their atmospheric fate, indicating the potential for long-range transport of high molecular weight PAH.

Type of Work:Ph.D. thesis.
Supervisor(s):Harrison, Roy
School/Faculty:Colleges (2008 onwards) > College of Life & Environmental Sciences
Department:School of Geography, Earth and Environmental Sciences
Subjects:GE Environmental Sciences
HD Industries. Land use. Labor
QD Chemistry
Institution:University of Birmingham
ID Code:5648
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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