Determination of 16 polycyclic aromatic hydrocarbons in airborne particle samples using two-step thermal desorption and gas chromatography-mass spectrometry
二级热脱附-气相色谱-质谱联用测定大气可吸入颗粒物中的16种多环芳烃

A method for the determination of 16 polycyclic aromatic hydrocarbons (PAHs) in airborne particle samples was developed using two-step thermal desorption and gas chromatography-mass spectrometry (GC-MS). The thermal desorption conditions and GC-MS parameters were optimized. The results showed that the detection limits (LODs) of this method varied from 0.14 to 0.42 ng/m3. The average recoveries were ranged from 52.7% to 97.9%, and the relative standard deviations (RSD) were ranged from 8.0% to 18.4%. The method was applied to analyze 32 collected airborne particle samples. In comparison with the traditional method, this method can avoid the waste of organic solvents and also shorten the analysis time. It is a green method, and beneficial for the environment and the analysts.