Dissolved in DMSO, acrylonitrile in TMP was determined by headspace gas chromatography with HP-624 capillary column.

• 采用顶空进样模式,以HP-624毛细管色谱柱为分离柱,二甲亚砜为溶剂,氮气作载气,FID为检测器,用气相色谱法测定甲氧苄啶中的残留丙烯腈。