Using gas chromatograhy with mass sepectromety (GCMS) can systemic analyses the benzene series compouds between the specimen to blank contrast, for the discrimination of the gasonline hangover.

• 利用气质联用仪，对样品及空白检材中的苯系物进行系统的分析以鉴别检材上汽油燃烧残留物的存在。