Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan.
Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan.
Int J Environ Res Public Health. 2020 Jan 28;17(3):805. doi: 10.3390/ijerph17030805.
Polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs (NPAHs) in PM samples were collected at a roadside monitoring station in Kanazawa, Japan, in every season from 2017 to 2018. Nine PAHs and five NPAHs were determined using high-performance liquid chromatography with fluorescence detection and chemiluminescence detection, respectively. The mean concentrations of PAHs and NPAHs were highest in winter and lowest in summer. Fluoranthene and pyrene were the dominant PAHs and 1-nitropyrene was the dominant NPAH in all seasons, and these compounds were mainly emitted by diesel vehicles. The concentration ratio of benzo()pyrene (BaP) to benzo()perylene (BgPe) ((BaP)/(BgPe)) and of indeno(1,2,3-)pyrene (IDP) to the sum of IDP and benzo()perylene (BgPe) ((IDP)/((IDP)+(BgPe0) might still be useful indicators for identifying traffic emission sources today. Moreover, our results showed that the carcinogenic risk in all seasons was below the acceptable limit set by the WHO.
在 2017 年至 2018 年期间，日本金泽市的一个路边监测站在每个季节都采集了 PM 样本中的多环芳烃（PAHs）和硝基多环芳烃（NPAHs）。使用高效液相色谱法结合荧光检测和化学发光检测分别测定了 9 种 PAHs 和 5 种 NPAHs。PAHs 和 NPAHs 的平均浓度在冬季最高，夏季最低。荧蒽和芘是所有季节中主要的 PAHs，1-硝基芘是主要的 NPAH，这些化合物主要由柴油车排放。苯并(a)芘（BaP）与苯并（g,h,i）苝（BgPe）的浓度比（BaP/BgPe）和茚并(1,2,3-cd)芘（IDP）与 IDP 和苯并（g,h,i）苝（BgPe）的浓度比（IDP/（IDP+BgPe））在今天可能仍然是识别交通排放源的有用指标。此外，我们的结果表明，所有季节的致癌风险都低于世界卫生组织设定的可接受限值。
