碩士 / 國立中山大學 / 環境工程研究所 / 102 / This study evaluated the environmental impact of seawater desalination effluent discharged into a water body by investigating potentially toxic trace elements(PTTEs) in the outfall area of a desalination facility on the southeastern coast of Penghu Island (Taiwan). Trace element concentrations are analyzed using various samples (sediment and seawater). Copper, zinc and arsenic were detected in sediment samples in the outfall area and decreased progressively as one moved away from this area. A contour plotting technique was applied to assess and visualize trace element pollution point sources (inputs) in the study area. Temporal trends of trace element concentrations are investigated by comparing biannual concentrations for a 2-year period (2006–2009.2). There is no obvious accumulation in the seawater and the sediments. Further, more a hazard index (HI) is applied to assess the potential hazard of contaminants to the environment. If the priority is to improve water quality, focus should be placed on Cu (HI=0.32). On the other hand, if the priority is sediment quality, the concentration (HI=0.66) should be reduced. If the two HIs (seawater and sediment) are considered together, As (HI=0.71) becomes the highest-ranking trace element, followed by Zn (HI=0.60).
| Identifer | oai:union.ndltd.org:TW/102NSYS5515034 |
| Date | January 2014 |
| Creators | Chi-Sheng Chen, 陳其聖 |
| Contributors | Jimmy C. M. Kao, 高志明 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 50 |
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