碩士 / 國立中央大學 / 環境工程研究所碩士在職專班 / 94 / Abstract
The objective of this study was to investigate potential sources of oyster contaminated by copper and arsenic in Sien-San area, Hsin-Chu City. Because most contaminants were regarded as coming from the Keya River, monitoring contaminant data from the river and the content of copper and arsenic in marine and sediment collected from web site and reports, which could indicate the fate of the selected metal in environment. Despite the data mentioned above, in situ sampling and analysis for selected metal in various matrixes including marine, sediment, and oyster were carried out in order to obtain the bioconcentration factor (BCF) and uptake rate constant of the selected metals with regard to oyster. By examining the BCF and uptake rate constant, the accumulative amounts of the metals in oyster can be predicted.
The results of heavy metal analysis in various mediums and collected data from literatures indicate that there are no significant relation between contamination of Keya River and wastewater discharge from Science Park in Hsin-Chu City. The copper concentration in marine increases with increasing copper concentration in Keya River and decreases with increasing SS concentration in Keya River. Accordingly, the copper ions in marine and sediment were thought to result from plants near Keya River, but arsenic ions were not. As for the BCF, the ranges of BCF for copper and arsenic were set as104~106 and 102~104, respectively. The obtained BCF values in this study are slight higher than those in literature. The uptake rate constants (1/day) estimated for copper and arsenic are about 446~1066 and 3.21~4.63. Based on the predicted uptake rate constants, the accumulative amounts of heavy metal in oyster within one year can be calculated with which copper is about 512~1201 mg/kg and arsenic is about 2.21~3.97 mg/kg.
| Identifer | oai:union.ndltd.org:TW/094NCU05515024 |
| Date | January 2006 |
| Creators | Chun-Chi Wu, 吳春吉 |
| Contributors | Jiunn-Fwu Lee, 李俊福 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 123 |
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