| 研究生: |
廖英孝 Ying-Xiao Liao |
|---|---|
| 論文名稱: |
直鏈式烷基苯基二甲基銨鹽類陽離子型界面活性劑在水環境中微量檢測方法的研究 |
| 指導教授: |
丁望賢
Wang-Hsien Ding |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學學系 Department of Chemistry |
| 畢業學年度: | 88 |
| 語文別: | 中文 |
| 論文頁數: | 57 |
| 中文關鍵詞: | 直鏈式烷基苯基二甲基銨鹽類 、陽離子型界面活性劑 |
| 外文關鍵詞: | ABDACs, Hofmann degradation |
| 相關次數: | 點閱:10 下載:0 |
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直鏈式烷基苯基二甲基銨鹽類(Alkylbenzyldimethyl ammonium chloride,ABDACs)為主要陽離子型界面活性劑之一,在臺灣的年生產量大約8000噸,且有逐年增加的趨勢,最常被使用作殺菌劑,其同系物有C12-,C14-,C16-BDACs ,另有C18-BDAC被用做潤髮劑。由於臺灣廢水處理廠的使用率不過5%而已,大部分ABDACs將直接被排放至河川或海洋中,且此類有機污染物在水環境中具有毒性與持久性,因此有必要發展一套方便的分析檢測方法,來探討ABDACs在水環境中的來源與宿命。
本研究主要是改善先前分析水中和土壤中ABDACs的方法,藉加入直鏈式烷基苯磺酸鹽類(Linear alkylbenzenesulfonates,LAS)形成親油性的離子對錯合物,以增加ABDACs 在固相萃取管中的萃取效果,利用甲醇-乙酸乙酯混合液沖提後,再行Hofmann degradation ,衍生化成直鏈式烷基二甲基胺(Alkyldimethyl amine ),並以GC-MS作定性與定量。結果顯示,此方法具有高精確性和靈敏度,在500 ml水樣中的偵測極限達0.1μg/L ; ABDACs的平均回收率分別為:89%、104%、98%、90%,相對標準偏差(RSD)分別為4.4%、12%、12%、7%。而台灣各河水中偵測ABDACs的總含量約為2.5~65μg/L。
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