GC-MS法测定烟气中多环芳烃含量的采样技术

Sampling technique for determination of polycyclic aromatic hydrocarbons in fire smoke by GC-MS

为建立火灾烟气中多环芳烃的GC-MS检测方法,选取4种吸附介质对燃烧烟气中多环芳烃的采样方法进行研究。结果表明,吸附剂不同对火灾烟气中多环芳烃的检测结果有较大的影响,吸附效果排序为微孔玻璃纤维滤芯>正己烷>环己烷>聚氨酯泡沫滤芯>颗粒活性炭;在PVC电工套管的燃烧烟气中检出9种多环芳烃,分别为芴、菲、蒽、荧蒽、芘、■、1,2-苯并蒽、苯并(b)荧蒽、苯并(a)芘;火灾烟气中的多环芳烃浓度很高,有必要加强消防员及火场勘验人员的职业健康安全防护。

In order to establish the GC-MS analyses fur PAlls in fire smoke, four kinds of adsorption media were selected Io study on the sampling method of PAHs in fire smoke. Results showed that the type of adsorher＇s have a great influence on the deteetkm results for PAHs in fire smoke. Rating by absorption efficiency is microporous glass fiber filter〉 nqlexane〉 cyclohexane〉 PUF〉 granular activated carbon. Nine kinds of PAHs, which were Fluo rene, phenanthrene, anthracene, fluoranthene, pyrene, benzo 1, 2 , benzo （b） anthracene, fluoranlhene, benzo （a） pyrene were de teeted in fire smoke of PVC electrician conduits. The rest.dis indi care that {t is necessary to strengthen the protection of occupation health and safety for fire fighters and fire investigators owing to a great number of PAils in fire smoke.