Methods Silica gel superfine process was conducted by combining solvent extraction and separation with macroporous absorbent resin.
方法首先用溶剂萃取结合大孔吸附树脂分离，然后用硅胶柱精制提取。
The separation and purification of pristinamycins from the fermentation broth by the method of silica gel column chromatography was developed.
建立了对发酵液中的普那霉素进行分离纯化的硅胶柱层析方法。
Methods Using silica gel column chromatography for separation, TLC for tracking and detection, HPLC for purity detection of the products.
方法采用硅胶柱色谱进行分离，薄层色谱跟踪检测，HPLC检测产品纯度。
Besed on the extract with 80% acidities alcohol, separation by silica gel, precipitation by ether, oxysophocarpine was obtained from Sophora flavescens.
采用80%的酸性乙醇提取、硅胶柱层析分离、乙醚分级沉淀、丙酮重结晶的工艺方法，从苦参中分离得到氧化槐果碱单体。
Some fractions with low molecular weight have been obtained by silica gel chromatography separation of Pingshuo coal extracts.
用硅胶色谱柱将平朔烟煤吡啶抽提物分离成八种不同馏分。
This review deals with the progress in the studies of silica gel bound crown for extraction and separation of metal ions. The preparation, application and instrument are described in detail.
综述了冠醚改性硅胶萃取分离金属离子的研究进展，对其制备、应用等也进行了详细的介绍。
This review deals with the progress in the studies of silica gel bound crown for extraction and separation of metal ions. The preparation, application and instrument are described in detail.
综述了冠醚改性硅胶萃取分离金属离子的研究进展，对其制备、应用等也进行了详细的介绍。
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