Concentration of Polycyclic Aromatic Hydrocarbons in the Seawater of Houwan Affected by the Grounding of the Chemical Tanker W-O Budmo

W-O Budmo擱淺事件對後灣水中多環芳香烴濃度的影響

10.29926/PLATAX.201012.0006

鄭金娥(Jing-O Cheng)；陳怡如(Ei-Ru Chen)；孟培傑(Pei-Jie Meng)；陳德豪(Te-Hao Chen)；李展榮(Jan-Jung Li)；王維賢(Wei-Hsien Wang)；柯風溪(Fung-Chi Ko)

多環芳香烴 ； 海水 ； 底泥 ； 液液萃取法 ； PAHs ； seawater ； sediment ； liquid-liquid extraction

Platax

2010卷7期（2010 / 12 / 01）

67 - 78

英文

On 8 August 2009, a German chemical tanker known as the W-O Budmo ran aground near Checheng, Pingtung, spilling oil into the Houwan area. Polycyclic aromatic hydrocarbons (PAHs), which have acute toxicity and sublethal effects to aquatic organisms, are major components found in oil and therefore there was great cause for concern. Concentrations of PAHs were monitored in seawater and sediments at several sampling sites near Houwan to evaluate the potential environmental impact caused by this incident. Two sampling sites (C and D) were established near the grounding location to capture the immediate spread of PAHs. Two other sites (B and E) were established 0.5 km north and south of the tanker's position to monitor the potential spread of pollutants. Site A was the water inlet of the National Museum of Marine Biology and Aquarium (NMMBA) to monitor seawater quality input to NMMBA. The reference station, site F, was at Wanliton. Samples were collected from the surface seawater (＜5 m) of Houwan from 10 August to 29 December 2009. The results indicated that the total PAH concentrations gradually decreased to the background levels at the sites where the W-O Budmo ran aground. Principal component analysis (PCA) of the seawater samples in this study was used to compare the PAH compound patterns of the oil spilled from the W-O Budmo. The results indicated that seawater at sites B, C, and D were affected by oil spilled from the W-O Budmo during the first week of the incident. One week after the incident, the PAH compound patterns at sites B, C, and D were similar to those of other sites, and were within environmental background levels from a previous study within the study area prior to the oil spill. Total PAH concentrations measured in surface sediment samples collected from inter-tidal areas were much lower than that previously reported in the same area, indicating that no oil residue was transported to the sediments in the inter-tidal areas. This study suggests that total PAH concentrations in the Houwan coastal area were not seriously affected by the grounding of the chemical tanker W-O Budmo.

On 8 August 2009, a German chemical tanker known as the W-O Budmo ran aground near Checheng, Pingtung, spilling oil into the Houwan area. Polycyclic aromatic hydrocarbons (PAHs), which have acute toxicity and sublethal effects to aquatic organisms, are major components found in oil and therefore there was great cause for concern. Concentrations of PAHs were monitored in seawater and sediments at several sampling sites near Houwan to evaluate the potential environmental impact caused by this incident. Two sampling sites (C and D) were established near the grounding location to capture the immediate spread of PAHs. Two other sites (B and E) were established 0.5 km north and south of the tanker's position to monitor the potential spread of pollutants. Site A was the water inlet of the National Museum of Marine Biology and Aquarium (NMMBA) to monitor seawater quality input to NMMBA. The reference station, site F, was at Wanliton. Samples were collected from the surface seawater (＜5 m) of Houwan from 10 August to 29 December 2009. The results indicated that the total PAH concentrations gradually decreased to the background levels at the sites where the W-O Budmo ran aground. Principal component analysis (PCA) of the seawater samples in this study was used to compare the PAH compound patterns of the oil spilled from the W-O Budmo. The results indicated that seawater at sites B, C, and D were affected by oil spilled from the W-O Budmo during the first week of the incident. One week after the incident, the PAH compound patterns at sites B, C, and D were similar to those of other sites, and were within environmental background levels from a previous study within the study area prior to the oil spill. Total PAH concentrations measured in surface sediment samples collected from inter-tidal areas were much lower than that previously reported in the same area, indicating that no oil residue was transported to the sediments in the inter-tidal areas. This study suggests that total PAH concentrations in the Houwan coastal area were not seriously affected by the grounding of the chemical tanker W-O Budmo.