Method: The gas chromatography - time of flight mass spectrography ( GC - TOFMS ) was employed.

方法: 采用气相色谱 - 飞行时间质谱法进行测定分析.

Structute of nitrogen heterocyclic ring quaternary ammonium salt cationic surfactants was identi fied by mass spectrography, nuclear magnetic resonance spectra, infrared spectra and etc.

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。