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使用分散性液相液相微萃取和線上濃縮技巧結合毛細管電泳檢測水中的農藥 = ...

國立高雄大學應用化學系碩士班

使用分散性液相液相微萃取和線上濃縮技巧結合毛細管電泳檢測水中的農藥 = The Use of Dispersive Liquid-Liquid Microextraction and On-line Sample Stacking Combined with Capillary Electrophoresis to Determine Pesticides in Water

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	The Use of Dispersive Liquid-Liquid Microextraction and On-line Sample Stacking Combined with Capillary Electrophoresis to Determine Pesticides in Water
作者:	陳曼儂,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2014[民103]
面頁冊數:	107面圖，表 : 30公分;
標題:	毛細管電泳 (CE)
標題:	Capillary electrophoresis (CE)
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/82706957910647685844
附註:	參考書目：面93-98
附註:	103年12月16日公開
摘要註:	農藥在大自然環境中隨處可見，是主要的汙染物之一。農藥殘留於水果和蔬菜收成時，將對人體造成傷害; 因為農藥在環境中的濃度低且處於複雜基質當中，例如: 土壤、食物等等，所以開發一個高效率的檢驗方法為食品安全把關是有必要的。毛細管電泳具有高效能、分離時間短、樣品和溶劑需求量少和操作簡單，在分析環境領域上越來越受歡迎。但毛細管電泳偵測極限比其他層析儀器較低，為提升偵測靈敏度，可採用靈敏度更高的偵測器 (例如: 質譜)，或是利用樣品前處理的方式，包含線上濃縮、固相萃取和固相微萃取等離線濃縮技巧。本研究是利用毛細管電泳中的微胞電動層析模式同時分離九種農藥，同時結合分散性液相液相微萃取法和Sweeping技巧。最佳化的緩衝溶液是pH 9.2的10 mM硼酸鹽類緩衝溶液，添加60 mM的SDS和18%的ACN，分離時間可以在13分鐘之內完成。LOD在0.28-2.30 ng mL-1，LOD的提升倍率可達350到3407倍之間。應用在飲用水、自來水和池水上的回收率為69.5-117%。此方法為首次結合Low density dispersive liquid-liquid microextraction (LD-DLLME) 和Sweeping檢測水中的農藥。 Pesticides are the pollutants and high persistence in the environment. Their residues present in fruits and vegetables may represent a serious hazard to human health. Analysis of pesticides is a difficult task for food safety since frequently they are found in low concentrations with complex matrices such as soils, foods, etc. Capillary electrophoresis (CE) is increasingly popular in environmental field due to its high separation efficiency, speed of analysis, low consumption of sample and reagent and simplicity, however, with inadequate limit of detections (LODs) . To overcome detection problems, one is to use more sensitive detection systems (i.e., mass spectrometry), the other one is to develop the preconcentration procedures based on on-line stacking methods or based on off-line operation procedures (solid-phase extraction, or solid-phase microextraction). The thesis is to separate nine pesticides by CE at the same time. The optimized buffer is [Borax 10 mM, SDS 60 mM, pH 9.2] with 18% (v /v) ACN. The separation time is within 13 minutes. After the combination both preconcentration procedures (LD-DLLME and Sweeping) allowed the determination of these pesticides in water samples at concentration between 0.28 to 2.3 ppb. Apparent recovery values were in the range 69.5-117%. The enhancement factors of LODs are 350 to 3407 times. The potential of the method was the first time of using Low density dispersive liquid-liquid microextraction (LD-DLLME) combined with Sweeping to determine the pesticides in the water samples.

使用分散性液相液相微萃取和線上濃縮技巧結合毛細管電泳檢測水中的農藥 = The Use of Dispersive Liquid-Liquid Microextraction and On-line Sample Stacking Combined with Capillary Electrophoresis to Determine Pesticides in Water
陳, 曼儂

使用分散性液相液相微萃取和線上濃縮技巧結合毛細管電泳檢測水中的農藥 = The Use of Dispersive Liquid-Liquid Microextraction and On-line Sample Stacking Combined with Capillary Electrophoresis to Determine Pesticides in Water / 陳曼儂撰 - [高雄市] : 撰者, 2014[民103]. - 107面 ; 圖，表 ; 30公分.
參考書目：面93-98103年12月16日公開.
毛細管電泳 (CE)Capillary electrophoresis (CE)

使用分散性液相液相微萃取和線上濃縮技巧結合毛細管電泳檢測水中的農藥 = The Use of Dispersive Liquid-Liquid Microextraction and On-line Sample Stacking Combined with Capillary Electrophoresis to Determine Pesticides in Water
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