Liu Li-Bin, Hashi Yuki, Liu Min, Wei Yanlin, Lin Jin-Ming
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, China.
Anal Sci. 2007 Jun;23(6):667-71. doi: 10.2116/analsci.23.667.
Particle-associated polycyclic aromatic hydrocarbons (PAHs) collected in urban air of Beijing were studied using a gas chromatograph mass spectrometer (GC/MS). The average concentration of particle-associated PAHs measured in this work was in the range from 28.53 to 362.15 ng/m3, which suggested a serious pollution level of PAHs in Beijing. The results also showed that the concentration of PAHs in the winter was distinctly higher than that in summer and spring. Benzo(a)pyrene (BaP) and benzo(a)pyrene-equivalent carcinogenic power (BaPE) were adopted to evaluate the PAHs pollution state at the sampling site. Through some diagnostic ratios, it can be concluded that traffic exhaust, especially vehicles with diesel engines, and domestic coal-burning heaters might have a prominent contribution to the PAHs concentration.
采用气相色谱 - 质谱联用仪（GC/MS）对采集于北京城市空气中与颗粒物相关的多环芳烃（PAHs）进行了研究。本研究中测得的与颗粒物相关的多环芳烃的平均浓度范围为28.53至362.15 ng/m³，这表明北京的多环芳烃污染水平严重。结果还表明，冬季多环芳烃的浓度明显高于夏季和春季。采用苯并(a)芘（BaP）和苯并(a)芘等效致癌强度（BaPE）来评估采样点的多环芳烃污染状况。通过一些诊断比值可以得出结论，交通尾气，尤其是柴油发动机车辆，以及家用燃煤取暖器可能对多环芳烃浓度有显著贡献。
