| Summary: | 碩士 === 國立高雄海洋科技大學 === 海洋環境工程研究所 === 97 === Many polycyclic aromatic hydrocarbons are well-known contaminant, which mainly come from (1) the internal combustion and pyrolysis processes, most of these are four rings; (2) industrial wastewaters and leaked petroleum from vessels, dominated by 2 to 3 rings compound. As an international harbor, Kaohsiung Harbor faces with high risk of polycyclic aromatic hydrocarbons contamination because it not only has a heavy daily traffic of vessels, but also is the estuary of Love River, the 5th Canal, Qian Zhen River, and Salt River. This research studies the PAHs content and species of sediment in Kaohsiung Harbor, through which we can understand the contamination of polycyclic aromatic hydrocarbons in Kaohsiung Harbor area. Based on the dominating species of these compounds this research also explores its pollutant sources in order to gain more information for future contamination prevention and remediation in the harbor area.
The research shows the content of polycyclic aromatic hydrocarbons ranging from 34 to 33,376 ng/g dry wt in the sediment in Kaohsiung Harbor area. The highest concentration is detected in the estuary of Salt River. The polycyclic aromatic hydrocarbons found in the sediment of Kaohsiung Harbor area are mostly 5 and 6 rings. These are primarily coming from the vehicle engines and high temperature burning. The estuary of Salt River is the only one exception, which contains PAHs of 2~3 rings, mostly coming from the industrial sources. The analysis of polycyclic aromatic hydrocarbons content in the sediment core in estuaries also reveals that the concentration is trending downward in every branch of estuary except for Salt River which shows increasing trend. The polycyclic aromatic hydrocarbons content in Salt River estuary has been higher than the ERM standard. The potential influence on the aquatic lives is worthy of concern and further exploration.
|
|---|
