Their thin-layer chromatogram, fluorescent spectra and fast atom bombardment mass spectra were examined to verify the completeness of the reaction and also to assign the structures.
用硅胶薄层色谱、荧光光谱及快原子轰击质谱证实反应物的完全性及其结构。
2
Steranes and terpanes exist in saturated hydrocarbon component of oil and source rock, and they are usually identified by gas chromatogram-mass spectrum.
甾萜类化合物存在于原油和生油岩的饱和烃组分中，通常用色谱-质谱法鉴定。
3
The polysaccharide structure has been determined by gas chromatogram and mass spectrometry. The important discussing the mechanism for determining polysaccharide structure by mass spectrometry.