Activation reaction and long range transportation of polycyclic aromatic hydrocarbons originated from imperfect combustion of organic matter

在这项研究中，同时在沈阳(中国)、金泽和和岛(日本)收集了空气中的颗粒物。测定了颗粒物中的9种多环芳烃(PAH)和3种硝基多环芳烃(NPAH)。冷季平均浓度高于暖季。气象分析表明，日本诺藤半岛的背景地哇集岛在寒冷季节采集的空气样本主要来自日本海的东北中国。多环芳烃和非多环芳烃的浓度比与东北中国所在的沈阳市相近，而金泽县则不同，后者位于瓦吉马附近。这些结果有力地表明，瓦济马冷季大气中的多环芳烃和非多环芳烃大部分来自中国东北地区的长距离输送。PAH和NPAH的组成在迁移过程中没有明显变化。

In this study, airborne particulates were collected simultaneously at Shenyang(China), Kanazawa and Wajima(Japan). Nine polycyclic aromatic hydrocarbons(PAH) and three nitropolycyclic aromatic hydrocarbons(NPAH) in the particulates were determined. The average concentrations were higher in cold season than in warm season. A meteorological analysis indicated that the air samples collected at Wajima, a background site on the Noto Peninsula, Japan, in cold season were transported mainly from Northeast China over the Japan Sea. Both the concentration ratios of PAH and NPAH were similar to those in Shenyang in Northeast China which located along the air transportation route to Wajima, but not in Kanazawa which near Wajima. These results strongly suggest that most of the atmospheric PAH and NPAH at Wajima in cold season were long range transported from Northeast China. And, no significant changes of PAH and NPAH compositions were observed during their transportation.