Characterization, identification of ambient air and road dust polycyclic aromatic hydrocarbons in central Taiwan, Taichung.
The concentrations of ambient air polycyclic aromatic hydrocarbons (PAHs) were measured simultaneously in an industrial area (Taichung Industrial Park, TIP) and suburban area (Tunghai University, THU) in central Taiwan, Taichung. A total of samples were collected simultaneously at the two sites between August 2002 and March 2003. Particle-bound PAHs (p-PAHs) were collected on quartz filters and gas-phase PAHs (g-PAHs) on glass cartridges using polyurethane foam sampler, respectively. Both types of samples were extracted with dichloromethane/n-hexane mixture (50/50, v/v) for 24 h, then the extracts were subjected to gas chromatography/mass spectrometric analysis. Moreover, the roadside dust particle PAHs composition were also collected and analyzed at TIP, THU and traffic road sampling sites. The five main road lines in Taichung City were selected as traffic road sampling sites. Correlation studies between PAHs concentrations and meteorological parameters were revealed that temperature has greater effects (P>0.6) than other meteorological parameters such as wind speed, relative humidity and atmospheric pressure on g-PAHs and p-PAHs. PAHs sources were resolved by using principal component analysis and diagnostic ratios. The major sources of PAHs were combustion, traffic vehicle exhaust (diesel and gasoline engine), incinerator and industrial stationary sources at both sampling sites in central Taiwan.
Fang
Guor-Cheng
GC
Air Toxic and Environmental Analysis Laboratory Hungkuang University, Sha-Lu, Taichung 433, Taiwan, ROC. gcfang@sunrise.hk.edu.tw
Chang
Cheng-Nan
CN
Wu
Yuh-Shen
YS
Fu
Peter Pi-Cheng
PP
Yang
I-Lin
IL
Chen
Ming-Hsiang
MH
D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D008401:Gas Chromatography-Mass Spectrometry; D007221:Industry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D025341:Principal Component Analysis; D013624:Taiwan; D001335:Vehicle Emissions / Q000032:analysis; D014887:Weather
D000393:Air Pollutants; D004391:Dust; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions