期刊
ENVIRONMENTAL POLLUTION
卷 133, 期 1, 页码 147-156出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2004.05.012
关键词
polycyclic aromatic hydrocarbons; gas/particle distribution; seasonal variation; factor analysis
The presence of polycyclic aromatic hydrocarbons (PAHs) in an urban region (Heraklion, Greece) and processes that govern their atmospheric fate were studied from November 2000 until February 2002. Sixteen samples were collected, by using an artifact-free sampling device, on a monthly basis and the concentration of PAHs in gas and particulate phase was determined. The most abundant members (gas + particles) were phenanthrene (20.0 +/- 7.0 ng m(-3)), fluoranthene (6.5 +/- 1.7 ng m(-3)), pyrene (6.6 +/- 2.4 ng m(-3)), and chrysene (3.1 +/- 1.5 ng m(-3)). Total concentration (gas + particulate) of PAH ranged from 44.3 to 129.2 ng m(-3), with a mean concentration of 79.3 ng m(-3). Total concentration of PAHs in gas phase ranged from 31.4 to 84.7 ng m(-3) with non-observable seasonal variation. Conversely, maximum PAH concentrations in the particulate phase occurred during winter months. Particulate concentration varied from 11.4 to 44.9 ng m(-3), with an average of 25.2 ng m(-3). PAH distribution between gas and particulate phase was in agreement with the sub-cooled vapor pressure. Shift in gas/particle distribution due to difference in ambient temperature elucidated to some extent the seasonal variation of the concentration of PAHs in particles. (C) 2004 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据