A high-volume air sampler (PS-1) was used to measure the
concentrations of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere
of Kaohsiung coast, PAHs diagnostic ratios,Hierarchical Cluster Analysis (HCA)
and Principal Component Analysis (PCA) were employed to determine the
potential sources of PAHs.
The results show that the lowest concentrations of PAHs occurred in May
(2.62 ngm-3), while the highest occurred in December (36.4 ngm-3). The
nighttime concentrations of PAHs are higher than daytime with average night /
day ratio of 1.65. The PAHs was more distributed in gas phase with
proportions between 64.1 to 93.7 %. The 2, 3-Ring PAHs were mostly present
in the gaseous phase (96.2 and 96.5 % respectively), 4-Ring also present
dominantly in the gaseous phase (73.0 %), 5-Ring present mostly in the
particle phase (80.2 %), 6, 7-Ring PAHs were mostly present in particulate
phase (97.4 and 97.7 % respectively). During the Ghost Festiva and Asian
dust storm events, atmospheric concentrations of PAHs and PAHs/TSP ratios
were both found increased.
It is found that gaseous and particulate PAHs correlate negatively with
ambient temperature(r=-0.62, -0.57).
Results from analyses of diagnostic ratios, HCA and PCA, the major
sources of pollution include gasoline, diesel exhaust and industrial emission.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0827108-154548 |
| Date | 27 August 2008 |
| Creators | Zeng, Kun-Yan |
| Contributors | Meng-Der Fang, Chin-Hsing Lai, Chon-Lin Lee, Jia-Jang Hung |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827108-154548 |
| Rights | withheld, Copyright information available at source archive |
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