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 compositions of grease were eluted with petroleum ether, benzene, chloroform, ethyl acetate, acetone, ethanol and characterized by means of IR and NMR spectroscopy.
用质谱法、核磁共振波谱法、红外光谱法等，确定了未知氮杂环季铵盐型阳离子表面活性剂的结构。
Structute of nitrogen heterocyclic ring quaternary ammonium salt cationic surfactants was identi fied by mass spectrography, nuclear magnetic resonance spectra, infrared spectra and etc.
利用核磁共振和红外光谱法研究工业烷基酚的结构。
The structure of industrial alkylphenol was characterized by NMR and IR spectroscopy.
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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