petroleum ether
英 [pəˈtrəʊliəm ˈiːθə(r)]
美 [pəˈtroʊliəm ˈiːθər]
石油醚
双语例句
- Methods: ( 1) To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
方法：（）硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。 - It is the first time that the petroleum ether extract and ethyl acetate extract of Nerviliafoadii.
首次确定了青天葵的石油醚和乙酸乙酯部位是体内抗肿瘤作用的有效部位。 - The ethanol extract from the twig bark powder of Periploca sepium was suspended in water and successively treated with petroleum ether, ethyl acetate and n-butanol.
将杠柳枝皮粉末的乙醇提取物悬浮于水后，依次用石油醚、乙酸乙酯和正丁醇萃取。 - Methods: The As in the oil was extracted by the solvent of petroleum ether ( non-toxic level), and determined by spectrophotometry.
方法：分别以无毒级石油醚、盐酸作为溶剂和萃取剂，将油中砷萃取，以光度法测定其含量。 - The fluorescence parameters of the chloroform extract and petroleum ether extract of two groups of vitrinoid of somewhat similar coalification are studied.
作者研究了煤化度相近的两组煤镜质组氯仿抽出物及其石油醚抽出物的萤光参数。 - Growth curve method showed the extract of petroleum ether and ethyl acetate of Rhizoma Amorphophalli had a time-effect effect on the proliferation of cell SGC-7901.
生长曲线法观察发现蛇六谷石油醚萃取物、乙酸乙酯萃取物对人胃癌SGC-7901细胞增殖抑制作用有一定的时间-效应曲线； - Study on Fingerprint of Petroleum Ether Extract of Psoralea and Psoralea Treated with Salt
补骨脂生品和盐品石油醚提取物的指纹图谱研究 - Studies on the Chemical Constituents of Petroleum Ether Extract of Lagerstroemia speciosa ( Linn.) Pers Leaves
大花紫薇叶石油醚部位的化学成分研究 - The alcoholic extract of French landaise geese gall was extracted by petroleum ether and isolated by silica column chromatography respectively, a white oily component could be obtained.
朗德鹅胆经乙醇浸提得醇提物，然后经石油醚萃取，硅胶柱层析分离得到白色油状组分，采用气相色谱-质谱联用技术进行了组成及相对含量分析。 - The compositions of grease were eluted with petroleum ether, benzene, chloroform, ethyl acetate, acetone, ethanol and characterized by means of IR and NMR spectroscopy.
油脂部分依次以石油醚、苯、氯仿、乙酸乙酯、丙酮、乙醇为淋洗剂进行洗脱，利用红外光谱、核磁共振光谱法对所分离组分进行了结构鉴定。 - The cultural fruiting bodies of the Gymnopilus spectabilis were phytochemical investigated using layer extracts with petroleum ether, diethyl ether, methanol and water and silica gel chromatography.
本研究采用石油醚、乙醚、甲醇、水溶剂梯度提取法和多种柱层析法，对栽培橘黄裸伞子实体进行了化学研究。 - Conclusion: The extract of petroleum ether of Rhizoma Amorphophalli is possibly one of antineoplastic parts of the plant.
结论：蛇六谷石油醚萃取物可能是该药抗肿瘤的有效部位之一。 - Effects of Different Combining Application of N, P, K Fertilizers on Petroleum Ether Extracts and Aroma Constituents in Flue-cured Tobacco Leaves
不同氮磷钾配施对烤烟石油醚提取物和中性致香物质的影响 - Four extracts of petroleum ether, ethyl acetate, n-butanol and water were obtained from the methanol extract of the root bark in Periploca sepeium.
杠柳根皮甲醇提取浓缩物的水悬浮液经石油醚、乙酸乙酯、正丁醇不同极性溶剂萃取后，得到石油醚、乙酸乙酯、正丁醇和水的四种不同萃取物。 - Study on Antitumor Effect and Mechanism of Petroleum Ether Extract of Pine Needles in vivo and vitro
松针石油醚提取物体内外抗肿瘤及机理研究 - Conclusion: The effective compound should be found in the petroleum ether and ethanol extracts;
结论：南、北五味子镇静、催眠有效成分主要分布于醚提物和醇提物中； - Study on Chemical constituents from the part of petroleum ether extract of Euphorbia pekinensis
京大戟石油醚提取部分化学成分的研究 - Chemical study on petroleum ether portion of Sarcandra hainanensis
海南草珊瑚石油醚部位化学成分研究 - Analysis of Chemical Constituents of Petroleum Ether Extract from Poplar Bud
杨树芽石油醚提取物的化学成分分析 - ObjectiveTo investigate and compare the best extraction method by petroleum ether from Curcuma wenyujin Y.H.
目的探讨并比较石油醚回流提取温莪术粗粉和微纳米粉体挥发油的最佳工艺。 - The paper suggests that the extraction of petroleum ether, polysaccharide and sodium copper chlorophyllin from banana leaves can be exploited as dishware abluent or abluent – assistants.
因此，从泡沫性能、表面张力、去污力三个方面，本研究认为香蕉叶石油醚抽出物、叶多糖和叶绿素铜钠盐可以开发作为餐具洗涤剂或洗涤助剂。 - Ultrasonic velocity and attenuation coefficient, density and adiabatic compressibility of petroleum ether under high hydrostatic pressure
石油醚在流体静高压下的超声声速、衰减、密度和绝热压缩系数 - Study on the Chemical Constituents of Erigeron Breviscapus Extracted by Petroleum Ether
灯盏花石油醚浸提物的化学成分研究 - Study on Chemical Components of Petroleum Ether Fraction of Alcohol Extract Obtained from Amorphophallus Blume
魔芋醇提取物中石油醚溶解组分的化学成分分析 - A Study of the Ways to Extract Fatty Acid Value from the Grain with Petroleum Ether
用石油醚提取粮食中脂肪酸值的方法研究 - So choose polarity small petroleum ether as elution solvent, polarity big is hexane as extraction solvent. 3.
因此选择极性小的石油醚作为洗脱溶剂，极性大的正己烷作为提取溶剂。 - The results showed that petroleum ether extract and ethyl acetate extract both had some anti-tumor effects in vitro.
结果表明，青天葵石油醚提取物和乙酸乙酯提取物具有一定的体外抗肿瘤作用。 - Taken into account to determine the quality of petroleum ether and cottonseed oil ratio of 1:1.
综合考虑，确定石油醚与棉籽油质量比为1：1。 - The stepwise extractions of IO were performed using petroleum ether, acetone, methanol and water orderly.
先通过分级萃取的方法将IO按石油醚、丙酮、甲醇和水的顺序依次进行萃取。