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研究生:丘福龍
研究生(外文):Fwu-Long Chiou
論文名稱:客雅溪流域水體和沈積物中銅物種與形態的研究
論文名稱(外文):Study on Species and forms of Copper in Waters and Sediments from Ker-Ya River
指導教授:洪楚璋洪楚璋引用關係
指導教授(外文):Tsu-Chang Hung
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:海洋研究所
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:1999
畢業學年度:87
語文別:中文
論文頁數:72
中文關鍵詞:銅物種與形態牡蠣活潑性不穩定性穩定性非活潑性六階段連續萃取法陽極電極析出法陽極剝除伏安法原子吸收光譜儀
外文關鍵詞:copper species and formsoysterslabilenonlabileSequential extraction techniqueASV( Anodic stripping voltammetry)AASAtomic absorption spectrophotometric)
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近年來,不少文獻報導香山養殖之牡蠣有遭受銅污染變綠的現象。銅污染來源可能與客雅溪河川有關。本研究針對客雅溪流域,分析銅在水體和沉積物中物種之分佈情形,水體中銅的物種包括活潑態,穩定態,及錯合能力。沉積物中六種相態的銅。
水體銅金屬研究,分析以下三種:(1)活潑態溶解銅;(2)穩定態溶解銅;(3)總溶解銅。以0.45μm濾膜過濾後,其中一部份在自然pH值條件下,以極譜儀微分脈波陽極剝除伏安法分析活潑態銅及銅之錯合能力;另一部份水體,經過紫外燈照射若干小時後,以破壞各種有機配位基與金屬之錯合鍵來分析總銅;並利用總銅扣掉活潑態銅的方式求出穩定態銅。結果發現客雅溪流域各測站,水體中的總溶解性銅偏高,而大部分溶解性的銅皆以穩定態的形式存在。自當賢橋以下的錯合能力強,表示仍有充份的有機配位體足以同化活潑態銅。
至於沉積物方面,沉積物採集後,首先利用濕篩方式將其分成泥質(<63μm)及砂質(>63μm)二部份,取小於63μm的泥質沉積物作為分析對象,以連續萃取方式分離銅在沈積物中的不同化學相,利用原子吸收光譜儀測出沉積物中各相態的銅。結果發現此流域中沉積物的銅礦物晶體相,鐵氧化物為主及鐵錳氧化物及氫氧化物相分居第一,第二位。且此兩相所佔的百分比極大。其他物種所佔百分比按大小次序排列分別為:有機相>可交換相>碳酸鹽相>以鐵錳氧化物為主及非晶質的鐵錳氧化物及氫氧化物相。來自生物源者及約佔12.8%,在前三項之較活潑之物種所佔的比例約為12.5%。顯示對水環境及生物體有相當的影響。
另外,並討論水體,沉積物中各種相態和一般水文參數的相關性,以期更宏觀的角度研判此次的分析與牡蠣變綠相互關係。

謝辭 …………………………………………………………………IV
摘要 ………………………………………………………………… 1
緒論 ………………………………………………………………… 3
實驗材料與方法 …………………………………………………… 9
一樣品採集與處理
(一) 水樣之採集與處理
(二) 沈積物之採集與處理
二儀器與化學藥品
(一) 儀器
(二) 化學藥品
三分析方法
(一) 水樣之分析
(二) 沈積物之分析
結果與討論 ……………………………………………………………23
一水文分析
二銅在水體中物種的分佈
(一) 水體中銅形態的分析
(二) 水體溶解性銅的計算理論
(三) 離子態的銅與水體中配位基之交互作用
三銅在沉積物中分析結果
(一) 顆粒分析
(二) 各種相態的銅分析的品質保證
(三) 沈積物中銅物種的分佈
(四) 水體、沈積物中銅含量與水文因子的相關性
(五) 銅的形態、物種與綠牡蠣之關係
結 論 …………………………………………………………………36
參考文獻 ………………………………………………………………37
附圖及附表 ……………………………………………………………43
圖目錄
圖一、ASV法以金屬離子滴定配位基典型滴定曲線情形
圖二、以ASV法測定重金屬的實驗曲線及計算方法
圖三、客雅溪流域各測站採樣圖
圖四、水體中銅物種及錯和能力分析方法及流程
圖五、沈積物連續萃取流程及化學成分
圖六、客雅溪中各測站的水體在自然pH條件下Cu之滴定圖
圖七、客雅溪中各測站的水體經UV照射後之(pH<2)Cu滴定圖
圖八、環湖橋Cu離子之標準添加圖
圖九、銅離子滴定各測站水體中電壓波峰的變化圖
圖十、測銅元素時,注入不同的樣品體積對吸光值的影響
圖十一、測銅元素時,分別改變灰化溫度,原子化溫度對吸光值
的變化圖
圖十二、測銅元素時,載流氣體流速對吸光值的影響
圖十三、客雅溪流域沈積物中銅物種的變化
圖十四、客雅溪流域各測站沈積物中銅物種的分佈圖
圖十五、客雅溪流域各測站CuT-Cu6濃度變化
表目錄
表一、偵測銅濃度的ASV設定條件
表二、客雅溪流域各測站之水文資料
表三、客雅溪流域各測站水體中銅的物種分佈
表四、水體中銅的型態及錯和能力與水文因子的關係
表五、客雅溪各測站泥質沈積物中銅之物種分析
表六、沈積物銅物種與水文因子的關係
表七、銅的物種在海水與沈積物間之相關係數

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