International Comparison of Emission, Transport, Secondary Formation and Exposure of Toxic Polycyclic Aromatic Hydrocarbons in Pan-Japan Sea Region

环日本海的日本、中国、韩国、俄罗斯等东亚国家，随着工业的快速发展，大气条件发生了显著变化。对该地区致癌多环芳烃(PAH)和硝基多环芳烃(NPAH)的大气行为进行了研究。通过采取有效的汽车尾气治理措施，降低了日本城市大气中的三氯甲烷浓度。然而，中国和俄罗斯的几个城市呈现出浓度上升的趋势。利用分析结果，建立了新的排放清单和化学物质运移模型。另一方面，在大气中，鉴定了几种通过二次生成形成的多环芳烃和NPAHs的氧化衍生物。PAHs和NPAHs的代谢产物和二次形成的衍生物等化合物具有较强的致突变性和内分泌干扰等生物活性。

East Asian countries surrounding Japan Sea, such as Japan, China, Korea and Russia, have shown significant change of atmospheric conditions with fast industrial development. Atmospheric behaviors of carcinogenic polycyclic aromatic hydrocarbon (PAH) and nitropolycyclic aromatic hydrocarbon (NPAH) were studied in this area. Their atmospheric concentrations decreased in Japanese cities by the effective countermeasures against automobile exhaust. However, several cities in China and Russia showed the increasing tendency of the concentrations. By using the analytical results, the emission inventory and the chemical transport model were newly developed. In the atmosphere, on the other hand, several oxidized derivatives of PAHs and NPAHs formed through secondary formation were identified. Several compound of metabolites and secondary formed derivatives of PAHs and NPAHs showed strong biological activities such as mutagenicity and endocrine disruption.