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題 名 | 中藥製劑中微量殘留農藥之篩測=Multiresidue Determination of Trace Pesticides in Chinese Medicine Formulation |
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作 者 | 李茂榮; | 書刊名 | 中醫藥年報 |
卷 期 | 17:3 1999.05[民88.05] |
頁 次 | 頁599-654 |
分類號 | 413.94 |
關鍵詞 | 有機氯農藥; 中藥製劑; 萃取; 層析; Organochlorine pesticide; Chinese medicine; Extraction; GC/ECD; GC/MS; |
語 文 | 中文(Chinese) |
中文摘要 | 藥用植物中的殘留農藥往往是在耕作過程中噴灑農藥,土壤改 良,及在貯藏過程中使用薰蒸劑累積而得,而許多植物性來源的藥 品通常需要長期使用,因此本計劃主要是利用索氏萃取(soxhlet extraction)及固相微萃取(solid phase microextraction, SPME)方式探討 中藥製劑中8種微量殘留有機氯農藥之篩測,並以GC/MS,GC/ECD 偵測以期建主藥劑中殘留農藥的標準及其分析檢測方法。 利用索氏萃取法時,1:1 v/v丙酮/正己烷混合溶劑為最佳萃取溶 劑,萃取加熱3小時,以GC/ECD或GC/MS(選擇離子偵測模式,SIM) 偵測,偵測極限(S/N=3)均可達ng/g範圍。選擇固相微萃取方式之最 佳實驗條件為,以100umPDMS固相微萃取纖維直接吸附1小時 後,於250℃脫附5分鐘,利用GC/ECDp21偵測,偵測極限(S/N=3)可達 ng/g以下。以GC/ECD偵測中藥製劑中殘留有機氯農藥時,利用索氏 萃取或固相微萃取法所得偵測極限範圍相似,唯索氏萃取法須較長 之分析時間且溶劑使用量大,易造成環境污染。故利用免溶劑萃取 之固相微萃取法,以GC/MS選擇離子偵測模式偵測,可節省分析時 間,提高靈敏度並避免樣品基質干擾。 |
英文摘要 | Pesticides applied to a broad variety of crops to reduce loses from weeds, insects and diseases will result in contamination on a medicine plant. The limits of residue pesticides for foodstuff and feed have been built by Food and Agriculture Organization (FAO) and World Health Organization (WHO). generally, a plant used as a medicine will be taken for a long time. it is very important to determination the residue pesticides in Chinese medicine formulation. In this study, various methods including soxhlet extraction, solid phase extraction and solid phase microextraction are used to study the extraction of organochlorine pesticides, α-BHC, β-BHC, γ-BHC, δ- BHC,p,p''-DDD,p,p'-DDE,o,p'-DDT, and p,p'-DDT in Chinese medicine formulations. The GC/ECD and GC/MS was evaluated for pesticides determination. The limits of detection of pesticides in Chinese medicine formulations are determined by GC/MS. |
本系統中英文摘要資訊取自各篇刊載內容。