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本研究以側鏈型液晶聚合物 (代號:PS3DBDE1) 為毛細管柱靜相材料, 塗佈在內徑 0.25 mm, 長度 30 m管柱之內部表面, 塗佈薄膜厚度為 0.25 m, 將毛細管柱安裝在氣相層析 / 質譜儀 (Hewlett-Packard Co., GC-5890/MS-5972), 測試分離 U.S EPA 1613CS4檢量線標準溶液中 18 種戴奧辛及戴奧辛呋 喃化合物 (polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs)) 之解析能力。 U.S EPA 1613CS4檢量線標準溶液購自 Wellington Co., Guelph, Ontario, Canada。 本研究中同時使用兩支內徑 0.25 mm, 長度為 30 m 之商業化非液晶充填材料之毛細管柱 (Hewlett-Packard Co.之HP-5MS及 RTX Co. 之RTX-5MS) 做為對照組, 以比較三支毛細管柱分離 U.S EPA 1613CS4 之解析能力, 解析度比較是以層析圖譜中毒性當量因子I-TEF權重較大及有重疊峰之化合物為對象, 計選定 8 組圖譜, 分別為: (1) 2,3,7,8-TeCDF vs 2,3,7,8-TeCDD, 代號 (peak 1 vs peak 2) (2) 2,3,7,8-TeCDD vs 1,2,3,4-TeCDD, 代號 (peak 2 vs peak 3) (3) 1,2,3,7,8-PeCDF vs 2,3,4,7,8-PeCDF, 代號 (peak 4 vs peak 5) (4) 2,3,4,7,8-PeCDF vs 1,2,3,7,8-PeCDD, 代號 (peak 5 vs peak 6) (5) 1,2,3,4,7,8-HxCDF vs 1,2,3,6,7,8-HxCDF, 代號 (peak 7 vs peak 8) (6) 1,2,3,4,7,8-HxCDD vs 1,2,3,6,7,8-HxCDD, 代號 (peak10 vs peak11) (7) 1,2,3,4,6,7,8-HpCDF vs 1,2,3,4,6,7,8-HpCDD, 代號 (peak15 vs peak 16) (8) 1,2,3,4,6,7,8,9-OCDD vs 1,2,3,4,6,7,8,9-OCDF, 代號 (peak17 vs peak 18) 上述八組圖譜中 (2)、(3)、(5)、(6) 四組為同分異構物, (1)、(4)、(7)、(8) 四組為同氯數之戴奧辛 / 呋 喃化合物, 由理論板數高度 (HETP, mm/plate) 與流速關係顯示最佳相當理論板數因管柱種類及戴奧辛 / 呋 喃化合物種類而異, 但最佳相當理論板數約在流速 0.8 mL/min~1.5 mL/min 範圍; 由計算理論板數顯示 PS3DBDE1管柱用於分離戴奧辛 / 呋 喃化合物比先前張簡(74,77)等人用於分離多環芳香化合物 (PAHs) 有較高之理論板數; 若以上述8組戴奧辛及呋 喃化合物來比較三種管柱之解析度 (Rs), 顯示PS3DBDE1管柱對下列四組之解析度較 HP-5MS 及 RTX-5MS 毛細管柱佳。 (1) 2,3,7,8-TeCDF vs 2,3,7,8-TeCDD 代號 (peak 1 vs peak 2) (2) 2,3,7,8-TeCDD vs 1,2,3,4-TeCDD 代號 (peak 2 vs peak 3) (3) 1,2,3,4,7,8- HxCDD vs 1,2,3,6,7,8-HxCDD13代號 (peak 10 vs peak 11) (4) 1,2,3,4,6,7,8,9-OCDD vs 1,2,3,4,6,7,8,9-OCDF 代號 (peak17 vs peak 18) 本研究同時使用三支毛細管柱來分離飛灰真實樣品, 依據 US EPA1613方法分析, 樣品前處理中添加 US EPA1613CS4 中標幟標準品 (LCS), 淨化標準品 (CSS), 內標準品 (ISS), 分析結果, 三支毛細管柱在各張圖譜中可以很容易的對應到戴奧辛 / 呋 喃待測物, 其中HP-5MS 分離樣品中 peak 4, peak 5, peak 6 解析度較 RTX-5MS 佳, PS3DBDE1 分離樣品 peak 2, peak 3 解析度較佳, 其餘 peak 在三支毛細管柱中並無顯示較佳之解析度。
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