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研究生:王智弘
研究生(外文):Chih-Hung Wang
論文名稱:五氯酚對槐葉蘋(Salvinia natans)毒性與累積之研究
論文名稱(外文):Studies on Toxicity and Accumulation of Pentachlorophenol for Salvinia natans
指導教授:林國雄林國雄引用關係
指導教授(外文):Kuo-Hsiung Lin
學位類別:碩士
校院名稱:輔英科技大學
系所名稱:環境工程與科學系碩士班
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:40
中文關鍵詞:植物復育法;毒性動力;生物濃縮指數
外文關鍵詞:PhytoremediationToxicokineticBioconcentratio
相關次數:
  • 被引用被引用:1
  • 點閱點閱:172
  • 評分評分:
  • 下載下載:19
  • 收藏至我的研究室書目清單書目收藏:0
環境受毒性污染物污染問題對人類和生物都是一大威脅,也降低了農業產品產量,危害環境生態系統健康。很多種類的不同污染物在不同環境介質的整治復育越來越受關注。傳統上的整治方法都比較昂貴且具破壞性質,近十年來,一種復育方式提出以植物清除污染場址漸受重視,並已投入相當研究,也就是植物復育法(Phytoremediation)。植物復育乃運用綠色植物藉由其吸收及降解以減低污染狀況,此復育法不僅為環境友善且花費較傳統工法為低。
本研究利用水生生物槐葉蘋(Salvinia natans)作為試驗生物,測定五氯酚對其毒性與累積之潛勢,藉以評估其作為植物復育的生物材料之可能性。研究結果顯示,五氯酚對槐葉蘋生長半抑制濃度(IC50)在21天暴露下,植體質量方面為1.012 mg/L,葉綠素(Chlorophyll)方面為1.377 mg/L,而IC50隨暴露時間減少而增大。生物濃縮指數(Bioconcentration factor)為利用單部門一階毒性動力模式求出,其值在0.25及0.5 mg/L暴露濃度下分別為140及109。綜合評估結果顯示,若配合適當生長管理,槐葉蘋可能適合應用於水生環境中五氯酚之植物復育。
The contamination of the environment by toxic pollutants poses a threat for human and biosphere, reducing agricultural productivity and damaging the heath of the ecosystem. The remediation to the various pollutants in different environment media has attracted great concerns from that frequently happens the important harm to public. The conventional remedial technologies are expensive and destructive. In the last decade, a new technology was made remediation by using plant to clean the contaminated sites, namely phytoremediation. It is a cost effective, environmental friendly approach, when compare to the conventional remedial technologies.
This work investigated an aquatic floating plant, Salvinia natans for its potential to clean contaminants. Pentachlorophenol was used as model compound to measure the toxicity and accumulation on Salvinia natans, and assess the applicability on potential of phytoremediation. Results indicated that the IC50 values were 1.012 and 1.377 mg/L at 21 day, underling the two end points, i.e. biomass and chlorophyll content, respectively. In both situations, the IC50 values decreased with the increment of exposure time. The toxicokinetics was described by one-compartment first order model and the BCFs were obtained from the ratio of accumulation and elimination rate constant (k1/k2). BCF (bioconcentration factor) values were 140 and 109 with exposing to 0.25 and 0.5 mg/L of PCP aqueous solution. The results suggest that the remediation could be performed for PCP pollution in aquatic environment, if the growth of Salvinia natans is managed properly.
中文摘要.......................................................................................................i
英文摘要.......................................................................................................ii
目錄.............................................................................................................iii
表目錄..........................................................................................................v
圖目錄..........................................................................................................vi
第一章 前言................................................................................................1
1-1 研究動機...............................................................................................1
1-2 研究目的...............................................................................................5
第二章 文獻回顧........................................................................................6
2-1 試驗用水生植物...................................................................................6
2-2 環境中五氯酚來源...............................................................................7
2-3 五氯酚在環境之流佈...........................................................................9
2-4 五氯酚對水生植物毒性效應...............................................................9
2-5 水生植物對有機污染物之吸收、累積與降解.................................11
2-6 水生植物對有機污染物之環境濃度容忍評估.................................16
第三章 研究方法......................................................................................18
3-1 試驗材料基本資料.............................................................................18
3-2 毒性試驗.............................................................................................19
3-3 植物生長半抑制濃度測定.................................................................20
iii
3-4 生物累積實驗.....................................................................................23
3-5 氣相層析條件.....................................................................................25
第四章 結果與討論..................................................................................27
4-1 PCP對槐葉蘋生長毒性效應...............................................................27
4-2 PCP對槐葉蘋IC50值............................................................................29
4-3 PCP在槐葉蘋之累積動力...................................................................33
第五章 結論與建議...................................................................................38
參考文獻.....................................................................................................39
表目錄
表2-2.1 五氯酚之一般理化性質................................................................8
表4-2.1 不同暴露時間下PCP對植體與葉綠素生長之IC50 (mg/L).........32
表4-3.1 PCP在槐葉蘋植體累積時間變化.................................................34
表4-3.2 毒性動力參數...............................................................................36
v
圖目錄
圖4-1.1 不同PCP濃度下植體生長率隨暴露時間之變化........................28
圖4-1.2 不同PCP濃度下葉綠素生長率隨暴露時間之變化....................29
圖4-2.1 不同暴露時間下植體生長抑制率隨PCP濃度之變化................30
圖4-2.2 不同暴露時間下葉綠素生長抑制率隨PCP濃度之變化............31
圖4-3.1 ㄧ階單部門累積動力模式可描述PCP累積動力,實線為預測值,點為實測值..................................................................................................37
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