查询词典 ethyl acetate

The costuslactone and dehydrocostuslactone in the supercritical CO 2 extract of aucklandia were identified by TLC using a mobile phase of petroleum ether,ethyl acetate and benzene (70∶5∶15) and the colour developing reagent of 5% vanillic aldehyde dissovled in sulfuric acid.

用薄层色谱法，以ψ(石油醚∶乙酸乙酯∶苯)=70∶5∶1 5为展开剂，质量分数为 5 %香草醛硫酸为显色剂对木香超临界萃取物中的木香烃内酯与去氢木香内酯进行鉴别；并建立高效液相色谱法同时测定木香烃内酯与去氢木香内酯的含量方法。

ResultWhenthe mass concentration of ethyl acetate extract was1mg/ml,the antifungal effectof Woodwardia japonica was best withthe antifungal rates onthe2fungi of R.cerealis and A.sol ani being88.8% and100% resp.

结果乙酸乙酯相萃取物的质量浓度为1mg/ml时，狗脊蕨的抑制效果最好，对小麦纹枯病菌和番茄灰霉病菌2种菌的抑制率分别为88.8%和100%，海金沙抑菌效果次之，对2种病原菌抑制率分别为73%和76.8%。

Pesticides were extracted from sample with ethyl acetate in an ultrasonic bath, then determined by gas chromatography-mass spectrometry operated in negative chemical ionization mode and quantified in selective ion monitoring mode, and ethion was used as an internal standard.

蔬菜水果样品用乙酸乙酯超声提取，以乙硫磷为内标物，采用GC-NCI-MS的选择离子监测方式进行定性和定量分析。9种有机磷农药的方法检测限为0.12～1.0 μg/kg。

Methods: M-acetaminphen was used as an internal standard, and alkalinized samples of plasma were extracted with ethyl acetate.

以间乙酰氨基酚为内标，血浆样品经碱化后，用乙酸乙酯提取。

METHODS: Fluoxetine and internal standard clozapine were extracted from plasma with ethyl acetate after being alkalized by sodium carbonate saturated solution.

以氯氮平为内标，血浆样品用饱和碳酸钠溶液碱化，经乙酸乙酯振荡萃取后，进样分析。

Methods The internal standard was diazepam, the samples were extracted by ethyl acetate after basified the plasma., the column was Hypersil C18, and the mobile phase mixed of methanol: water(75:25) containing 0.03%-triethylamine.

色谱柱为Hypersil ODS C18 4.0mm×250mm，流动相为含0.03%三乙胺的甲醇：水（75：25），流速1.0ml/min，紫外276nm波长检测。

Similarly, those for biodegrading ethanol are temperature of 25~30℃,pH of 5, flux of 0.06m3/h, and the maximal elimination capacity of 712.9g/m3 reactor/h . Moreover, the reactor for degrading ethyl acetate or ethanol is also stable in the long operation.

气升式环流生物反应器降解乙醇的优化条件为：温度范围为25～30℃，pH值为5，进气流量为0.06m3/h，反应器的处理能力最大为712.9g乙醇/m3 /h，且连续长时间的操作，反应器一直处于稳定的处理状态。

Methods:The CAP residue was extracted from aquatic products which with ethyl acetate and defatted by n-hexane after concentrated.

而在水产养殖中，则曾被广泛应用于水产动物病害的预防和治疗，造成动物性食品中的残留。

The ethylated wood of weight percent gain about 6-23 can resoluted at 80℃ in bisphenolA-ethyl acetate solution. In the presence of NaOH, these solution can reacted with epichlorohydrin toproduce new epoxy resin adhesive with wood as backbone.

发现增重率6～23的乙基化木材可在温和条件（80℃）下溶解于双酚A－乙酸乙酯溶液中，形成的溶液可用于制备以木材主成份为骨架的新型环氧树脂胶粘剂。

Objective To establish a HPLC method for the determination of aceclofenac in human plasma.Methods Acidified samples of plasma (500μL) were extracted with 4 mL of ethyl acetate. The organic phase was evaporated to dryness by nitrogen at 40℃ water bath. The residue was redissolved in mobile phase and then was determined.

醋氯芬酸是一种具有镇痛作用的非甾体类抗炎药物[1]，化学名为[邻-(2，6-二氯苯基)氨基]苯乙酰乙酸，l992年首先于西班牙上市，具有明显广泛的抗炎作用和强力的解热镇痛作用，其生物半衰期较双氯芬酸长，胃肠耐受性较双氯芬酸好，抗炎活性优于萘普生和保泰松[2]。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。