本文用衍生物合成、降解反应、红外光谱、核磁共振谱及x -射线衍射晶体分析法研究了它的化学结构。
Its structure has been studied through a series of chemical synthesis, preparation of derivatives, degradations and IR analyses, and ultimately determined by X-ray diffraction.
简述核磁共振氢谱（PMR）定量测法，并列举了一些应用实例。
This paper simply relates the quantitative analysis by PMR spectroscopy and enumerates some applied samples.
方法采用RP HPLC法对荧光素钠注射液进行成分分析并用硅胶柱色谱法对主要杂质进行分离，根据质谱和核磁共振谱数据进行结构鉴定。
Methods The components were analyzed using RP-HPLC. The main impurities were separated using silica gel column chromatography, which were identified by MS and NMR.
方法利用硅胶柱色谱法对牛白藤进行分离纯化，根据理化性质和核磁共振谱数据鉴定其结构。
Methods the compounds were isolated and purified by repeated silica column chromatography and identified by their physical characteristics and nuclear magnetic resonance spectrum.
文章采用红外光谱法、 核磁共振谱等手段对得到的环氧树脂的结构加以表征，并根据表征结果分析其合成的机理。
Structures of the lignin base epoxy resins and their forming mechanisms were analyzed according to results of characterization by IR, 1H-NMR, 13 C-NMR, and so on.
文章采用红外光谱法、 核磁共振谱等手段对得到的环氧树脂的结构加以表征，并根据表征结果分析其合成的机理。
Structures of the lignin base epoxy resins and their forming mechanisms were analyzed according to results of characterization by IR, 1H-NMR, 13 C-NMR, and so on.
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