Details

Autor(en) / Beteiligte

• Chen, K.S.
• Li, H.C.
• Wang, H.K.
• Wang, W.C.
• Lai, C.H.

Titel

Measurement and receptor modeling of atmospheric polycyclic aromatic hydrocarbons in urban Kaohsiung, Taiwan

Ist Teil von

• Journal of hazardous materials, 2009-07, Vol.166 (2), p.873-879

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2009

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The concentrations of 21 individual polycyclic aromatic hydrocarbons (PAHs) and total suspended particles (TSPs) were measured using high-volume air samplers at Tzuo-Yin and Hsiung-Kong sites in Kaohsiung City, Taiwan, for four seasons from 2005 to 2006. The gaseous and particulate phases of individual PAHs were identified using a gas chromatograph with a flame-ionization detector (GC/FID). Measurements show that the concentrations of total (gas + particulate) PAHs generally followed the seasonal variations of the concentrations of TSP (107.2–117.1 μg m −3), being the highest in winter (143.9–182.9 ng m −3) and lowest in summer (81.4–95.2 ng m −3) at both sites. Most PAH species were low-weight PAHs (approximately 80.8–82.0%), followed by high-weight PAHs (10.5–14.6%) and medium-weight PAHs (6.5–6.8%). The fractions of gaseous PAHs decreased with molecular weight or ring number. The particle phase (60.2(73.5%) dominated the high-weight PAHs. Results of receptor model show that industrial combustions (49.1–63.7%) contributed most to ambient PAHs, followed by restaurant emissions (18.4–39.7%) and mobile sources (11.3–22.8%) at the Tzuo-Yin site. At the Hsiung-Kong, mobile sources (49.5–63.3%) contributed most to ambient PAHs, followed by restaurant emissions (19.8–36.6%) and industrial combustions (13.7–27.1%). The differences in the results at the two sites are mainly attributed to the different industries at each site.