Environmental assessment of polycyclic aromatic hydrocarbons in the surface sediments of a remote region on the eastern coast,Taiwan |
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| Authors: | Jun-Yi Kuo Fung-Chi Ko Jing-O Cheng Pei-Jie Meng Jan-Jung Li Chin-Chang Hung |
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| Institution: | (1) Institute of Marine Biodiversity and Evolutionary Biology, National Dong-Hwa University, Pingtung, Taiwan;(2) National Museum of Marine Biology and Aquarium, 2, Houwan Road, Checheng, Pingtung, Taiwan;(3) Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan;(4) Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung, Taiwan; |
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| Abstract: | Surface sediment samples were collected in He-Ping Harbor and the nearby He-Ping Estuary from 2005 to 2006 to examine spatial
and temporal variability in polycyclic aromatic hydrocarbon (PAH) concentrations. The sum of the 16 USEPA priority pollutant
PAHs varied from 8 to 312 ng/g dry weight, which was relatively low compared to values obtained from other studies in the
world. Regarding temporal changes in the PAH profile, total PAH concentrations in the wet season were lower than during the
dry season in He-Ping Harbor. However, the concentration of PAHs exhibited no significant difference in the four seasons in
the He-Ping Estuary. PAH concentrations in He-Ping Harbor were higher than those in the He-Ping Estuary. In comparison with
sediment quality guidelines, PAH concentrations of sediments in this study were lower than those outlined in the criteria,
which suggests no evident adverse biological effects due to PAHs around the He-Ping coast. Ratios of specific PAH compounds
calculated to assess the possible sources of PAHs reflect that PAHs in He-Ping Harbor may mainly be from pyrogenic coal combustion. |
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