Analysis of contribution of oxidants from various sources to the wide area air pollution by isotope chemistry

对九州北部2010-2012年春季观测到的空气污染进行了研究，重点研究了空气污染的环境动态及其对人类健康的不利影响。日本西部的大气环境日益恶化，以至于最近从早春到雨季，不仅城市，其他地方也经常出现雾霾。含有的空气污染物包括一些化学物质、黄沙和花粉。这些化合物的联合作用恐怕会增加鼻炎患者、过敏性疾病和呼吸系统疾病的发病率。最重要的是，2010年5月20日和21日，九州北部被一场被认为来自亚洲大陆的浓雾所覆盖。由于能见度低，这场大雾给火车和航班带来了交通混乱。在此期间检测了黑碳、硫酸盐、铅、臭氧和苯等人为成分。1945年在洛杉矶也观察到了类似的烟雾，我们还首次发现了以前暴露在空气污染物中的黑色黄沙。

Air pollution which observed in spring of 2010-2012 in the northern Kyushu was studied, focusing on its environmental dynamics and adverse health effects on humans. Atmospheric environment in the western Japan was found to be worsening, so that recently a haze was pretty often observed over not only cities but also other places from early spring to rainy season. Air pollutants contained are some chemicals, yellow-sand and pollens. The combined effect of those compounds was feared to increase rhinitis patients, allergic and respiratory diseases. Above all on May 20 and 21 in 2010, the northern Kyushu was covered with a dense fog which was assumed to be carried from the Asian Continent. This fog brought about traffic turmoil in trains and flights due to the poor visibility. The anthropogenic components such as black carbon, sulfate, lead, ozone and benzene were detected on this period. The similar smog was observed in Los Angeles in 1945.We also identified for the first time that black-colored yellow-sand which had previously been exposed to air pollutants.