碩士 / 國立新竹教育大學 / 應用科學系碩士班 / 98 / Abstract
Danshui River, one of main rivers in Taiwan, helps to develop Taipei’s ancient civilization, but water pollution has been caused because of human overdevelopment. However, with the rising awareness of environmental protection in recent years, the water quality has finally been improved through the government and the public work together rescuing Danshui River.
Mugil cephalus often appears in the downstream and middle part of the rivers of Danshui, Keelung, and HsinTien. Besides, it is often eaten by people, and is also a good biological index. By means of microwave digestion method, this thesis is to use ICP-OES to research the heavy metal accumulation in Mugil cephalus muscle, stomach and digestive organs after the food has been fully digested in them. The findings are as follows:
1. The accumulation of heavy metals, such as Cu, Pb, Zn, Cd, Cr, Ni, and Mn in the muscles of Mugil cephalus in Danshui River, is all below the standard limit of our country and other countries.
2. Through the analysis of SPSS, the result shows that the accumulation of heavy metals, such as Cu, Zn, Cd, Cr, Ni in the muscles of Mugil cephalus in Danshui River, Keelung River, and HsinTien River varies from river to river.
3. Through the analysis of SPSS, the fish samples in 2009 contain more Cu and Cd than those in 2008. As to other heavy metals, there is no striking difference between the two years.
4. The analysis shows that fish stomach contains far more heavy metals than fish muscles. Therefore, fish muscle can be used to test eating safety of Mugil cephalus, while fish stomach is more suitable for monitoring the environment.
5. By testing the food remains in the fish digestive organs, it shows that there is high content of heavy metal Mn. The heavy metal accumulation in Mugil cephalus near the NanHu Bridge over Keelung river is 202.96mg/kg, and near the ChungCheng Bridge over HsinTien River is 258mg/kg, but Mn content in fish muscle is ND.
6. The heavy metal accumulation in Mugil cephalus muscle and its size are only correlated with Cd (0.315)to some extent; besides, they are negatively correlated with other heavy metals, such as Cu, Pb, Zn, Cr, Ni, and Mn.
| Identifer | oai:union.ndltd.org:TW/098NHCT5115014 |
| Date | January 2010 |
| Creators | Jiunn-Lin Tsern, 岑雋麟 |
| Contributors | , 江慧真, 楊樹森 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 73 |
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