purified ether
英 [ˈpjʊərɪfaɪd ˈiːθə(r)]
美 [ˈpjʊrɪfaɪd ˈiːθər]
网络 精制醚
双语例句
- Commercially available sodium lauryl sulfate was purified by such methods as recrystallization of water, recrystallization of ethanol and extraction of ethyl ether.
介绍了用两种不同的方法制备十二烷基硫酸钠，并对制备出的产物的性能与分析纯的标样进行了比较。 - Samples are extracted by 80% of methanol-water solution with ultrasonic and by normal hexane, then purified by chromatography pretreatment little column. The eluant was the mixed solution of normal hexane and ether with the volume ratio of 2:1. The detection limit is 0.0016mg/kg.
样品用80%的甲醇水溶液超声波提取，正己烷萃取，PT-硅镁吸附剂色谱预处理小柱净化，配比为2：1的正己烷和乙醚混合液用作洗脱液，气相色谱法检测。 - The pigment, the highest yield of which was 22.3% on the basis of dry fruit weight, could be purified by mobile phase of acetic ether acetonum ( 2 ∶ 1) in the silica gel column.
该色素用硅胶柱，以乙酸乙酯－丙酮（2∶1）作流动相可初步得到提纯，最高得率可达22.3%（以干果重计）。 - Although Chinese distribution of Officinal Magnolia is broad, market prices are also most expensive with large market demand. Generally, Magnolol is separated and purified from Chinese herbal medicine by such method as thermal extraction with ethanol or petroleum ether as solvent.
我国的厚朴分布很广，市场需求量较大，市场价格也较贵，厚朴酚一般通过乙醇或者石油醚等热回流提取方法将厚朴酚从中草药中分离提纯得到。