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研究生:周慧怡
研究生(外文):Chou, Huei-Yi
論文名稱:淡水河河口海域沉積物與生物重金屬調查研究
論文名稱(外文):The study of trace metals in sediments and organisms of the Danshuei River Estuary River
指導教授:方天熹方天熹引用關係
指導教授(外文):Fang, Tien-Hsi
口試委員:秦宗顯劉秉忠
口試委員(外文):Chin, Tzong-SheanLiu, Ping-Chung
口試日期:2017-07-26
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:海洋環境資訊系
學門:自然科學學門
學類:海洋科學學類
論文種類:學術論文
論文出版年:2018
畢業學年度:106
語文別:中文
論文頁數:38
中文關鍵詞:淡水河河口海域沉積物生物體重金屬健康風險評估
外文關鍵詞:the Danshuei River Estuarysedimentorganismtrace metalhealth risk assessment
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本研究在淡水河河口海域採取表層沉積物與植物及生物樣品,分析這些不同樣品中之重金屬(鎘、鈷、鉻、銅、鐵、錳、鎳、鉛與鋅)元素濃度,以了解目前淡水河流域重金屬元素之污染情形,樣品以王水加熱消化並使用火焰式及石墨式原子吸收光譜儀,分析消化液中各元素濃度。
本研究分析所得沉積物重金屬濃度範圍如下: Cd,DL~0.08 mg/kg;Co,6.33 ~17.4 mg/kg;Cr,24.2 ~57.0 mg/kg;Cu,16.3 ~27.2 mg/kg;Fe,3.06 ~3.38 %;Mn,126.3~209.5 mg/kg;Ni,14.2~31.4 mg/kg;Pb,5.35~7.39mg/kg;Zn,62.8~122.8 mg/kg。生物樣品濃度範圍如下: Cd,DL~0.017mg/kg;Co,0.77~6.59 mg/kg;Cr,1.32 ~89.94 mg/kg;Cu,1.14 ~86.80mg/kg; Ni,DL ~5.61 mg/kg;Pb,DL ~6.09mg/kg與Zn,22.68 ~166.15mg/kg。分析資料顯示,沉積物重金屬元素只有Ni濃度超過環保署底泥品質法規標準下限值(24 mg/kg),其它元素濃度低於底泥品質法規標準下限值,顯示淡水河流域重金屬元素污染輕微。各生物樣品重金屬元素濃度差異明顯。利用生物樣品濃度計算食用淡水河河口海域水產生物之「健康風險評估」,計算結果顯示除了鉻元素之危害商數值大於2外,其餘元素值皆遠小於1。
In order to understand the present contamination status of the Danshuei River Estuary, the surface sediments, plants and organisms were collected from the Danshuei River Estuary to analyze the concentrations of trace metals (cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead and zinc) in these samples. The sediment and biological samples were digested with aqua regia/HF and strong acid, respectively, and the trace metal concentrations in the digested solutions were analyzed by the atomic absorption spectrometry.
The concentrations of trace metals in sediments and organisms were as follows: Cd, DL-0.08 mg/kg; Co, 6.33-17.4 mg/kg; Cr, 24.2-57.0 mg/kg; Cu, 16.3-27.2 mg/kg; Fe, 3.06-3.38%; Mn, 126.3-209.5 mg/kg; Ni, 14.2-31.4 mg/kg; Pb, 5.35-7.39 mg/kg; and Zn, 62.8-122.8 mg/kg. The concentrations of the estuarine organisms were as follows: Cd, DL-0.017 mg/kg; Co,0.77-6.59 mg/kg; Cr,1.32-89.94 mg/kg; Cu,1.14-86.80 mg/kg; Ni, DL-5.61 mg/kg; Pb, DL-6.09mg/kg; and Zn, 22.68-166.15 mg/kg. The concentrations of trace metal, except Ni, in sediments of the Danshuei River Estuary were generally lower than the lower value of the sediment quality standards of EPA, Taiwan. However, the concentrations of Ni in some sediment samples were slightly higher than the regulation value (< 24 mg/kg), suggesting that the studied area was contaminated by Ni. The concentrations of trace metals in the biological sample significantly varied with the different samples. The health risk assessment of trace metal concentrations in fishes collected from the Tamsui River estuary was calculated and the results of the calculated value were generally less than 1 except for Cr of which value could exceed 2.
致謝 I
摘要 II
目錄 IV
表目錄 VI
第一章 緒論 7
1-1 簡介 7
1-2 研究目的 8
第二章 研究方法 9
2-1 研究區域 9
2-2 樣品採取與分析 12
第三章 研究結果 14
3-1 沉積物重金屬元素 14
3-2 植物重金屬元素 16
3-3 生物重金屬元素 18
第四章 討論 21
4-1 沉積物重金屬元素濃度 21
4-2 生物重金屬元素濃度 24
第五章 結論 32
參考文獻 33


圖目錄
圖 1淡水河流域圖(資料來源:東海大學) 9
圖 2A、B、C三站點為本研究採樣站點示意圖 12
圖 3各測站沉積物重金屬濃度分佈圖 15
圖 4各測站植物重金屬濃度分佈圖 17
圖 5各測站生物重金屬濃度分佈圖 20

表目錄
表 1各測站沉積物重金屬元素濃度 14
表 2各測站植物重金屬元素濃度 16
表 3各測站生物重金屬元素濃度 (乾重) 18
表 4本研究與國內其它河川河口海域沉積物重金屬元素調查濃度之比較(元素濃度mg/kg,但Fe為%) 22
表 5本研究與國外河口海域沉積物重金屬元素濃度之比較(元素濃度mg/kg) 23
表 6淡水河流域生物樣品溼重濃度(濃度mg/kg) 26
表 7每人每日容許攝取建議量表(溼重) 27
表 8危害商數(hazard quotient, HQ)評估表 28
表 9本研究與國內其它河口海域捕獲魚類重金屬濃度(溼重mg/kg)比較 30
表 10本研究區域與國外河川河口魚類魚肉重金屬濃度之比較表 31
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