大流量PUF采样-气相色谱质谱联用测定广州市大气中多环芳烃

Determination of Polycyclic Aromatic Hydrocarbons in Guangzhou Atmosphere by Gas Chromatography-Mass Spectrometry with High Volume PUF Sampler

采用PS-1型大流量聚氨酯泡沫（PUF）大气采样器，采集了2004年夏季5、6、7三个月广州市区和郊区两个采样点20个大气样品，用气相色谱-质谱联用仪测定了其中16种多环芳烃的含量。结果表明，广州夏季市区和郊区大气中16种多环芳烃（气相和颗粒相）（∑16-PAHs）浓度范围分别为49．33-329．37ng／m^3和30．11-97．97ng／m^3，市区与郊区∑16-PAHs平均浓度分别为144．25ng／m^3和58．79ng／m^3，市区明显要高于郊区；市区和郊区苯并[a]芘（BaP）平均浓度分别为1．17ng／m^3和0．76ng／m^3，均未超过国家空气质量标准。

Totally 20 ambient air samples were collected in the urban and suburban site of Guangzhou between May and July 2004 to investigate the concentration of 16 polycyclic aromatic hydrocarbons （ ∑ 16-PAHs（ gas ＋ particle ） ） using gas chromatography - mass spectrometry （ GC -MS）. ∑ 16-PAHs concentration in urban ranged from 49.33 to 329.37 ng/m^3 , with the average of 144. 25 ng/m^3. While ∑ 16-PAHs in suburb ranged from 30. 11 to 97.97 ng/m^3 with the average of 58.79 ng/m^3. The average concentration of BaP in urban and suburb were 1.17 ng/m^3 and 0. 76 ng/m^3, respectively, both below the limit of the regulation in China.