State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China.
Environ Pollut. 2015 Jan;196:164-70. doi: 10.1016/j.envpol.2014.10.005.
The occurrence of polycyclic aromatic hydrocarbons (PAHs) and nitrated derivatives (NPAHs), as well as their transformation may have significant health impacts on humans. To investigate the level, spatial distribution and the transformation process of PAHs and NPAHs in North China, we performed a griddedfield passive air sampling campaign in summer of 2011. The median concentration of 25 PAH congeners and 13 NPAHs was 294 ng m(-3) (or 26.7 mg sample(-1)) and 203 ng sample(-1), respectively. Relative higher level of PAHs in Shanxi Province and NPAHs in megacities was observed. In North China, coal/biomass combustion and photochemical formation was the predominant source of PAHs and NPAHs, respectively.To investigate the relationship between these pollutants, a model incorporating NPAHs, PAHs and NO(2) was established, and the result indicated that NO(2) will promote the transformation processes from PAHs to NPAHs, which may increase the total toxicity of PAH-NPAH mixtures.
多环芳烃（PAHs）和硝化衍生物（NPAHs）的出现以及它们的转化可能对人类健康产生重大影响。为了研究华北地区 PAHs 和 NPAHs 的水平、空间分布和转化过程，我们于 2011 年夏季进行了网格化现场被动空气采样活动。25 种 PAH 同系物和 13 种 NPAHs 的中值浓度分别为 294ngm(-3)（或 26.7mg 样本(-1))和 203ng 样本(-1)。在山西省观察到相对较高水平的 PAHs 和特大城市中相对较高水平的 NPAHs。在中国北方，煤炭/生物质燃烧和光化学形成分别是 PAHs 和 NPAHs 的主要来源。为了研究这些污染物之间的关系，建立了一个包含 NPAHs、PAHs 和 NO(2)的模型，结果表明，NO(2)将促进 PAHs 向 NPAHs 的转化过程，这可能会增加 PAH-NPAH 混合物的总毒性。
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