萃取

OBJECTIVE To increase lignan compounds and essential oil in extraction of Schisandra chinensis by supercritical CO2 extraction technology.

目的利用超临界二氧化碳萃取技术就提高五味子萃取物中有效成分木脂素和挥发油的含量开展研究。

A separatory funnel is used to perform a liquid-liquid extraction as demonstrated in Video 5 (Reaction Work-up I: Extraction, Washing and Drying) of the Digital Lab Techniques Manual.

在数位实验技巧指南中影片5是用一个分液漏斗来示范「液体-液体」的萃取(反应检查步骤I ：萃取，冲洗及乾燥)影片照片由Dr。

objective to optimize microwave extraction process of mannitol from sparganium stoloniferum.methodsguided by the contents of mannitol in sparganium stoloniferum, uniform design, response surface analysis and path analysis were used to optimize microwave extraction process by combining with single factor experiment.resultsobtained response surface equation is notable at the level a.01 and the relative error of the predicted value from the model was smaller than 1%.

目的优化三棱中甘露醇的微波辅助萃取工艺。方法以甘露醇含量为响应指标，通过均匀试验设计，采用二次响应曲面和通径分析并结合单因素实验优化三棱中甘露醇的微波辅助萃取工艺。

Water samples were extracted and purified and collected by solid-phase extraction LC-18 column. Soil samples were extracted by ethyl acetate/petroleum ether (2:1, by vol) and purified by sulphonation. Wheat sample was extracted by acetonitrile/water (4:1, by vol) and purified and collected by SPE- Florisil column.

水样直接用LC-18固相萃取小柱分离、净化和富集；采用乙酸乙酯／石油醚（体积比2：1）振荡提取，磺化法净化，测定土壤中氯氟吡氧乙酸残留量；以乙腈／水（体积比4：1）为提取剂，氟罗里硅土固相萃取小柱分离、净化，测定小麦样品中氯氟吡氧乙酸的残留量。

The compounds which contain sulfur in the residual oil were oxidized into sulphone and sulphoxide, which were extraced by using the DMF as the extraction agent.

渣油中的含硫化合物被氧化成砜和亚砜，用DMF为萃取剂萃取砜和亚砜。

The extraction of penicillin G with petroleum sulphoxide and di-isooctyl.

系统研究了亚砜类萃取剂石油亚砜和二异辛基亚砜萃取青霉素G的性能。

The EAG results showed that no significant difference between female and male S.bifasciatus.The EAG responses of S.bifasciatus to 3-Carene,Limonene,Terpinene and Thujopsene were increased with the concentration respecitively within the range of 1/1000-1/10.The results of "Y" tube olfactory bioassay showed the pests can be attracted by 1/100 Limonene,3-Carene and Thujopsene.Original and 1/10 Terpinene was the best. In addition,the extracts of A2 and D1 also caused positive attraction to S.bifasciatus,while the extracts by SE and SDE were non-attractive.

触角电位测定结果表明，双条杉天牛雌雄成虫对样品的EAG反应无显著差异。1/10浓度的3-蒈烯、柠檬烯、萜品烯和罗汉柏烯的EAG值最大。Y型嗅觉行为生测结果表明，1/100浓度的柠檬烯、3-蒈烯和罗汉柏烯对天牛有明显引诱效果，萜品烯则是原液和1/10浓度的引诱效果最好；α-蒎烯和β-蒎烯无明显引诱效果。4种提取方法中，改装简易蒸馏法样品(A2)和超临界CO_2萃取样品(D1)对天牛具有明显引诱作用；索氏提取物和并时蒸馏萃取物无引诱效果。

The method of solid phase membrane extraction -gas chromatographic analysis for the determination of tetramine in urine and blood is briefly described.

研究了固相膜萃取-气相色谱测定尿液、血液中毒鼠强的方法。从沉积物中萃取腐植物是研究工作者遇到的第一个问题。

The needles of Thermopsis lanceolate R.Br. were extracted with supercritical carbon dioxide to obtain alkaloids.

利用超临界CO2萃取的方法，研究了披针叶黄华萃取工艺，得到总生物碱。

After being extracted and purified, thiamine which has no fluorescence was oxidized to fluorescent thiochrome, then, it was extracted by n-butanol, the thiochrome in n-butanol were measured with spectrofluophotometer, and the thiamine was determined.

样品经提取、净化后，再利用碱性铁氰化钾K3Fe(N6将没有荧光的硫胺素氧化成能够发射荧光的硫色素，经正丁醇萃取后测定萃取液中硫色素的含量，从而实现对维生素B1含量的测定。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。