碩士 / 國立東華大學 / 海洋生物多樣性及演化研究所 / 97 / The sorption and partitioning of polybrominated diphenyl ethers (PBDEs) between the particulate and dissolved phases control their fate and transport in the aquatic systems. PBDEs that are present in water enter the food chain by bioconcentration from water into the phytoplankton and accelerate the transport in the water column by sorption from water to the particulate phase. The goal of this study was to measure and compare the sorption and bioconcentration kinetics of various PBDEs in the suspended sediment and phytoplankton (Picochlorum eukaryotum). The PBDE concentrations of Picochlorum eukaryotum in this experiment display fast adsorption at the first sampling point (10 min), and then increases along with the sorption time. The highest concentration of each congener was found in 168th hour. In this study, Log BCF values of the congeners with Log Kow＞7 have poor linear relations with their Log Kow values, indicating that it was difficult to achieve sorption equilibrium for the sorption of these PBDEs to the Picochlorum eukaryotum. It may be affected by PBDE hydrophobicity and molecular weight. On the other hand, PBDE concentrations in the suspended sediment display that Log Kp values increase along with the sorption time and have good linear relations（R2>0.8）with their Log Kow values. Further bioconcentration kinetics of PBDEs determined in phytoplankton and sediment could be applied to field situations.
| Identifer | oai:union.ndltd.org:TW/097NDHU5270009 |
| Date | January 2009 |
| Creators | Yu-Ju Huang, 黃郁儒 |
| Contributors | Fung-Chi Ko, 柯風溪 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 107 |
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