GC-MS法测定大气样品的前处理研究——碳化纤维树脂捕集大气中痕量多环芳烃

Study on Pretreatment of Sample of Ambient Air for GC-MS Analysis:Carbonized Fibrous Resin as a Sorbent for Polycyclic Aromatic Hydrocarbons(PAHs)

研究了碳化纤维树脂吸附载体采集大气中多环芳烃(PAHs)的性能、样品前处理条件和毛细管气相色谱-质谱联用仪检测PAHs的方法。对具有代表性的多个采样点进行了实地采样、分析 ,证明碳化纤维树脂吸附载体是一种性能独特的固相吸附剂 ,建立的样品前处理方法可行 ,分析数据可靠 ,可用于大气中PAHs的检测。

The properties of carbonized fibrous resins as an adsorbent of polycyclic aromatic hydrocarbons(PAHs) from ambient air are reported. The sample pretreatment conditions for ultrasonic extraction and subsequent elution through a slilica _ gel column have been studied. Pretreated samples can then be analyzed by GC-MS. Results of real samples collected at some typical sites indicate that the carbonized fibrous resin is a good sorbent with unique properties. The proposed sampling method for ambient PAHs has been proved to be reliable, and can be used for PAHs determination in atmospheric environment.