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轉(zhuǎn)換比率:金額 X 10=金幣數(shù)量, 例100元=1000金幣 | 論文字?jǐn)?shù):6395 | ![]() | |
折扣與優(yōu)惠:團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式:Word格式(*.doc) | ![]() |
摘 要:以三七粉為原料,探明超聲波震蕩法和固相萃取技術(shù)應(yīng)用于三七中有機(jī)氯農(nóng)藥的提取凈化的工藝條件,確定適合提取用的原料的粒度后,研究提取劑、提取時間、料液比、活化劑、洗脫液、以及凈化過程對有機(jī)氯回收率的影響,以確定最佳提取凈化條件。結(jié)果顯示,較理想的提取工藝條件為:提取劑采用丙酮;提取時間為60min;料液比1:20;活化劑是使用5ml丙酮-正己烷(體積比為1:9)混合溶液和5ml正己烷先后淋洗弗羅里硅土小柱;洗脫液配比1:9,通過多組實(shí)驗(yàn)建立起超聲波震蕩法-固相萃取技術(shù)-氣相色譜法檢測三七中有機(jī)氯農(nóng)藥殘留量的分析方法。 關(guān)鍵詞:有機(jī)氯;超聲波提??;固相萃取;凈化;檢測;回收率
ABSTRACT:Regard Radix Notoginseng powder as raw materials, verify the supersonic wave and shake the law and firm the little extraction technology apply to the process conditions purified in abstraction of pesticide of organic chlorine in Radix Notoginseng, after confirming the granularity suitable for raw materials that withdrawn, it study withdraw on pharmaceutical, it withdraw on time, material liquid than, activator, lasting liquid, and lasting course impact on rate of recovery of organic chlorine, in order to confirm that withdraws purifying the condition best. The result reveals, the process conditions of more ideal abstraction are: Withdraw pharmaceuticals and adopt propanone; It is 60min to withdraw time; Material liquid to 1:20; Activator use 5ml propanone and own alkane (volume than for 1:9) mix solution and 5ml own alkane successively drip wash not Rory's silicon soil pillar; Elute matching 1:9 of the liquid, set up supersonic wave and shake the law - firm analytical method that the little extraction technology - chromatogram law of gaseous phase detects the organic Lu Lu in Radix Notoginseng quantity through many group's experiments. Keywords: organochlorine; ultrasonic extraction; solid-phase extraction; purification; detection;recovery |