Concentration and Partitioning of Polycyclic Aromatic Hydrocarbons in the Seawater of Houwan, Taiwan

後灣海水多環芳香烴化合物的濃度和分配

鄭金娥(Jing-O Cheng) ； 柯風溪(Fung-Chi Ko) ； 王維賢(Wei-Hsien Wang)

《Platax》 2011卷 (2011/12) Pp. 53-64

https://doi.org/10.29926/PLATAX.201112.0006

摘要

本研究針對後灣海域進行多環芳香烴（PAHs）濃度測定，討論影響PAHs濃度變化因子和PAHs分配係數。結果顯示後灣海水中溶解態和顆粒態PAHs濃度範圍分別是0.46ng/L-3.86ng/L和0.04ng/L-1.8ng/L，與鄰近海域相比，是屬於低度污染。底泥的再懸浮作用是主要造成後灣海水PAHs濃度變化的主因之一。有機碳分配係數（logKoc）和正辛醇－水分配係數（logKow）呈現顯著正相關，且每個PAH分子的logKoc值均大於logKow，顯示有較強吸附能力的類似煤灰的顆粒存在後灣海水中。

關鍵字

多環芳香烴 ； 海水 ； 再懸浮 ； 分配

並列摘要

This study involved determining temporal variation in polycyclic aromatic hydrocarbon (PAH) concentrations in Houwan seawater. Factors causing the variability in PAH concentrations and partitioning of PAHs between the particulate and dissolved phases were investigated. The results showed that the total concentrations of PAHs in the dissolved phase and particulate phase ranged from 0.46 to 3.86 ng/L and 0.04 to 1.8 ng/L, respectively. The Houwan seawater is less contaminated with PAHs than the adjacent seawater. Sediment resuspension was likely the main reason for the high variability observed in PAH concentrations. This study also found a linear relationship between logKoc and logKow of PAHs. The observed high partition coefficients in this study may be explained by the presence of soot-like carbon, a strong adsorbent, in the suspended particulate matters.

並列關鍵字

PAHs ； Seawater ； Resuspension ； Partition