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Advances in Meteorology
Volume 2015, Article ID 245438, 8 pages
http://dx.doi.org/10.1155/2015/245438
Research Article

Origin and Distribution of PAHs in Ambient Particulate Samples at High Mountain Region in Southern China

1School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
2School of Environmental Science and Engineering, Shandong University, Jinan 250100, China
3Shandong Environmental Monitoring Center, Jinan 250101, China
4The Swire Institute of Marine Science, The University of Hong Kong, Pokfulam, Hong Kong
5State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Received 6 June 2014; Revised 21 November 2014; Accepted 21 November 2014

Academic Editor: Hesham El-Askary

Copyright © 2015 Peng-hui Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To understand the deposition and transport of PAHs in southern China, a measurement campaign was conducted at a high-elevation site (the summit of Mount Heng, 1269 m A.S.L.) from April 4 to May 31, 2009, and a total of 39 total suspended particulate samples were collected for measurement of PAH concentrations. The observed particulate-bound PAHs concentrations ranged from 1.63 to 29.83 ng/m3, with a mean concentration of 6.03 ng/m3. BbF, FLA, and PYR were the predominant compounds. Good correlations were found between individual PAHs and meteorological parameters such as atmospheric pressure, relative humidity, and ambient temperature. The backward trajectory analysis suggested that particulate samples measured at the Mount Heng region were predominantly associated with the air masses from southern China, while the air masses transported over northern and northwestern China had relative higher PAHs concentrations. Based on the diagnostic ratios and factor analysis, vehicular emission, coal combustion, industry emission, and unburned fossil fuels were suggested to be the PAHs sources at Mount Heng site. However, the reactivity and degradation of individual PAHs could influence the results of PAH source profiles, which deserves further investigations in the future.