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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:我國農(nóng)藥生產(chǎn)和使用具有三高的特點：年生產(chǎn)量高，每年生產(chǎn)約40萬t原藥，位居世界第二位；品種結(jié)構(gòu)不合理，殺蟲劑產(chǎn)量高，約占農(nóng)藥總產(chǎn)量的70％ ，這樣就構(gòu)成了對農(nóng)產(chǎn)品和食品的嚴重威脅，進入環(huán)境中的農(nóng)藥有些被降解產(chǎn)生無毒或毒性更強的代謝產(chǎn)物，有些在環(huán)境中大量殘留，再加上農(nóng)民濫用、亂用農(nóng)藥現(xiàn)象普遍存在。 本項目的研究，由超聲提取條件優(yōu)化實驗得出超聲提取的各種最佳條件，最佳超聲提取時間為15分鐘，最佳超聲提取次數(shù)為3次，最佳超聲提取功率為90%最佳料液比為1:15，找到一個快速的提取云黃連中農(nóng)殘留七氯的方法。并討論過程當中各個因素對研究結(jié)果的影響。 關(guān)鍵詞：黃連；有機氯農(nóng)殘留；超聲波；氣象色譜
ABSTRACT:In our country, Production and use of pesticides has three high characteristics: First It is high levels of annual production, annual production of about 400,000 t of the original drug , It ranked second in the world .what’s worse , The variety structure is irrational and high production of pesticides , it is about 70% of total pesticides. So this create a serious threat to agricultural and food product. The study on Extracted optimization of (organ chlorines) Heptachlor from Coptis used Yunnan Coptis as raw material and studies to residue the extraction method in the traditional Chinese medicine of the organic chlorine pesticides and obtains in the traditional Chinese medicine by the time the organic chlorine agricultural chemicals highly effectively, simply, fast, the duplicated good extraction method, to further study in the typical traditional Chinese medicine the organic chlorine pesticide residue to provide the earlier period research foundation. Keywords:coptis root；organochlorines；agriculture residual；oas ohromatography |
