臺灣博碩士論文加值系統

重金屬污染土壤為全球共通性的問題，很多研究探討重金屬在土壤的行為以及進行實場整治。土壤組成複雜，各種物化性質對吸附行為亦有不同程度的影響。有機質含量與土壤顆粒表面積為影響土壤吸附行為重要特性之ㄧ。
本研究藉由實際已受重金屬污染場址之土壤，利用濕篩分離不同土壤粒徑，以及沉降方法將土壤分離為顆粒性有機質及底土，分別測其有機質及重金屬含量，探討懸浮有機質與沉降顆粒重金屬含量差異，藉此了解重金屬在土壤中分佈。
結果顯示底土土壤質量遠高於POM質量，POM重金屬全量以及有機質含量較底土高，因此重金屬元素大部分都被大粒徑中的有機物所吸附。比較POM與底土腐植質之重金屬濃度顯示POM之Cu濃度高於底土，POM之Cd濃度與底土接近以及POM之Cr濃度低於底土，而且HS之重金屬濃度以中粒徑濃度較高。以大中小分子量HS比較，大多以大分子量HS之重金屬濃度較高，小分子量HS之重金屬濃度最低。腐植質中Cu濃度與TOC以及OM含量有正相關。

Heavy metal contaminated soil is a common problem around the world, therefore, many researchers have been conducted to examine the behaviors of heavy metal in soil and to implement the field remediation. However, there were different degree effects on the adsorption behavior of heavy metal on soil owing to the complex soil composition. The organic matter content and surface area of soil were the important characteristics that can affect the adsorption behavior of soil. This research used the heavy metal contaminated soil to study the relationship between size fraction soil and the content of heavy metals. In addition, size fraction soil were separated into particulate organic matter (POM) and settling soil and both heavy metal content and total organic carbon were measured. The results showed that mass of settling soil were much greater than POM but the organic matter content of POM were higher than in settling soil. Because of high organic matter content in POM the heavy metal concentrations in POM were higher than in settling soil in separated size fraction soil. The heavy metal concentrations of HS extracted from POM and settling soil shown that POM was greater than settling soil for Cu, POM was equaled to settling soil for Cd, and POM was lower than settling soil for Cr. Moreover, highest metal concentrations were concentrated on middle size fraction soil. The concentrations of heavy metal in high molecular HS were greater than in both middle and low molecular HS. The Cu concentration of HS had positive correlation with both content of TOC and OM.

目錄
摘要 I
ABSTRACT II
謝誌 III
目錄 IV
表目錄 VII
圖目錄 VIII
第一章 前言 1
1.1研究緣起 1
1.2研究目的 1
第二章 文獻回顧 2
2.1 臺灣污染場址現況 2
2.2重金屬鉻、銅、鎘特性 5
2.3金屬相態在環境上的意義 7
2.4土壤組成與重金屬吸附 8
2.5有機質對吸附特性之影響 10
2.6有機質與腐植質 10
第三章 材料與方法 14
3.1土壤來源 14
3.2實驗藥品與器材 14
3.2.1藥品與器材 14
3.2.2實驗儀器設備 14
3.3實驗流程 15
3.4土壤性質量測 18
3.4.1土壤中有機質的萃取與分離程序 20
3.4.2原子吸收光譜儀測定 20
第四章 結果與討論 22
4.1土壤基本性質 22
4.1.1 原始土壤污染濃度 22
4.1.2土壤質量比例 22
4.1.3 pH值、有機質及總有機碳測定 24
4.2不同粒徑土壤之顆粒性有機質及底土重金屬濃度及含量 26
4.2.1金屬濃度分析-王水消化 26
4.3 各粒徑POM及底土之HS重金屬於大、中、小分子分佈 32
4.3.1 原土之HS重金屬 32
4.3.2 各粒徑之HS重金屬大、中、小分子分佈 34
4.3.3 各粒徑之原土與HS重金屬含量比較 39
4.4 各粒徑POM及底土中HS重金屬總量 41
4.5 各粒徑POM及底土中HS重金屬濃度及總量之相關性分析 44
4.5.1 重金屬濃度相關性分析 44
4.5.2 重金屬含量相關性分析 44
第五章 結論與建議 47
5.1 結論 47
5.2 建議 48
參考文獻 49
作者簡介 51

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