Methods the extracted liquid with petroleum ether from the geochemical samples in the north of Shaanxi was spectrally analyzed by using the optimized measurement condition.
方法用优化后的条件对陕北地区化探样品中芳烃的石油醚萃取液进行了光谱分析。
The precipitate was vacuum dehydrated, and then phospholipids were extracted with ethyl ether. having 74. 90% of the phospholipids; its productivity is 30. 87%.
菜油脚经离心分离出中性油，再通过真空脱水，乙醚提取制得某油磷脂，其磷脂含量达74．90％，产率为30．87％。
Fat in male and female squillid meat and squillid heads was extracted with diethyl ether by means of rapid fat extractor instead of Soxhlet extractor respectively.
用快速脂肪提取器对雄、雌虾蛄肉及虾蛄头中的脂肪进行了提取和测定。
Methods Artemisinin is extracted with petroleum ether and pass column of silica gel and gradient elution with ethyl acetate, then it is tracked with TLC and detected with UV-VIS.
方法青蒿经石油醚提取浓缩，浸膏经过硅胶柱，用不同配比的乙酸乙酯洗脱，用tLC法跟踪，UV法检测。
Methods: The LYQ was extracted with the 60% ethanol, liposoluble impurity was removed by petroleum ether, then extracted by water-saturated butanol.
方法：采用60%乙醇提取、石油醚去除脂溶性成分、水饱和正丁醇萃取法提取六月青皂苷。
Then gradient extraction was carried out with petroleum ether and ethyl acetate, and the activity of extracted substance with ethyl acetate was better than others.
再用石油醚、乙酸乙酯进行梯度提取，确定乙酸乙酯提取物的活性更优，测得总黄酮含量为27.73%。
The constituents from pickle brine extracted with ethyl ether and identified by GC MS. In the result, 8 acids, 4 alcohol, 2 nitriles, 2benzines and 1 ester were identified.
首先，对雪里蕻腌菜卤汁的乙醚萃取浓缩液组分进行了鉴定，结果发现有机酸组分8个，醇类组分4个，腈类组分2个，酯类组分1个，芳香烃2个。
The constituents from pickle brine extracted with ethyl ether and identified by GC MS. In the result, 8 acids, 4 alcohol, 2 nitriles, 2benzines and 1 ester were identified.
首先，对雪里蕻腌菜卤汁的乙醚萃取浓缩液组分进行了鉴定，结果发现有机酸组分8个，醇类组分4个，腈类组分2个，酯类组分1个，芳香烃2个。
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