臺灣博碩士論文加值系統

本研究使用Berner and Lao (1994)之沉積物磷物種分析方法，分析台灣西南海域沉積物磷物種之分佈，此外在總無機相磷與自生源相磷萃取液中亦分析其鐵濃度。所分析樣品中沉積物總磷的濃度範圍為7.59-15.37 μmol/g之間，其主要以岩屑相磷存在佔總磷濃度之74-92% (平均值為82%)，第二以有機相磷存在佔總磷濃度之5-22% (平均值為12%)，其次以生源相磷存在佔總磷濃度之1-13% (平均值為5.7%)。離子交換相及鐵錳氧化相之鐵濃度範圍為0.11-1.11%(平均值為0.42%)，非殘留相鐵濃度為0.41-1.52%(平均值為0.85%)。 台灣西南海域各相磷物種之空間分佈與沉積物粒徑分佈相似，即離岸越遠，濃度較高，高值分佈於外傘頂洲附近海域，顯示沉積物粒徑大小可能主宰磷物種之空間分佈。此外沉積物中不同相之磷與鐵濃度有良好之線性相關存在，顯示此海域之磷的地化作用受鐵元素影響。台灣西南海域沉積物中之總磷濃度與一般大陸棚之值相似，且其生源相磷濃度也不高， 顯示此海域受到磷的污染尚不明顯。

目 錄 摘要……………………………………………………..………………Ⅰ Abstract …………………………………………………………………..Ⅱ 目錄 ………………………………..................................................Ⅳ 表目錄 ......................................................................................Ⅵ 圖目錄 ..............................................................................Ⅶ 第一章、簡介 .............................................................................1 1.1 前言 ........................................................................1 1.2 海洋環境之磷循環 ...........................................................2 1.3 研究目標 …......................................................................3 第二章、研究方法….............................................................6 2.1 研究區域 .......................................................................6 2.2 沉積物磷物種分析 ...............................................................9 2.2.1 自生源相磷(Acetic-P)分析 ...............................................10 2.2.2 總無機相磷(TIP)分析 ................................................10 2.2.3 總磷(TP)分析 ............................................................10
2.3 研究藥品、試劑及儀器 …..................................................16 第三章、結果與討論 .................................................................18 3.1 結果 ................................................................................18 3.1.1 顆粒粒徑大小 ..................................................................18 3.1.2 有機碳 .............................................................................19 3.2 總磷 ..............................................................................20 3.2.1 自生源相磷(Acetic-P) .....................................................21 3.2.2 總無機磷-total inorganic P(TIP) ....................................21 3.2.3 總有機磷-total organic P(TOP) .......................................23 第四章、結論 ........................................................................38 參考文獻 ..............................................................................39
表 目 錄： 表 3-1台灣西南海域各採樣站沉積物不同磷物種之濃度(μmol/g)…..25 表3-2台灣西南海域各測站離子交換相及鐵錳氧化相之鐵濃度 (Ace-Fe)、非殘留相鐵濃度(HCl-Fe)、有機碳濃度(OC) 、無機碳 濃度(carbonate)及粒徑顆粒(��).......................................27 表3-3台灣西南海域各測站不同型態的磷物種及鐵、有機碳與沉積物粒徑之相關係數 ......................................................29 表3-4世界各陸棚海域沉積物中總磷、總無機磷、及有機磷之濃度(μmol/g)比較 ..........................................................30
圖 目 錄： 圖1海洋中沉積物之磷循環 ................................................4 圖2研究取樣測站位置分布圖 ..............................................8 圖2-1連續萃取方法分析磷在各相中之處理流程 .......................12 圖2-2自生源相磷物種之分析流程 .......................................13 圖2-3總無機磷之分析流程 .................................................14 圖2-4總磷相物種之分析流程 .............................................15 圖3-1 台灣西南海域各測站沉積物不同磷物種之濃度(μmol/g)分布圖 …………………………………………………………31 圖3-2 台灣西南海域各測站沉積物不同磷物種之濃度百分比分布圖 ……………………………………………………………32 圖3-3 有機碳濃度、粒徑顆粒、離子交換相及鐵錳氧化相之鐵濃度、非殘留相鐵濃度之空間分佈圖 .................................33 圖3-4 本測站海域內總磷的濃度分布圖 ................................34 圖3-5本測站海域內各種不同型態的磷的濃度分布圖 ...............35 圖3-6 (a)自源生相磷(Acetic-P)與Acetic-Fe之濃度相關性 .........36 圖3-6 (b)總無機相磷(TIP)與HCl-Fe之濃度相關性 ................36
圖3-7 有機磷(OP)與有機碳(OC)之濃度相關性 .........................37

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