Lü Sen-Lin, Wang Qing-Yue, Wu Ming-Hong, Feng Man, Shinichi Nakmura, Wang Xiao-Ju, Shinichi Yonemochi
Shanghai Applied Radiation Institute, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 201800, China.
Huan Jing Ke Xue. 2010 Sep;31(9):2260-6.
Ambient particulate matters (PM) and allergenic pollens in urban atmosphere have taken negative effects on human health and air quality. Studies on synergistic effects between the two pollutants are being focused in disciplines, such as atmospheric sciences, environmental toxicology, and immunology. In this study, physicochemical characterization of airborne fine/ultrafine particles in Shanghai, China and ambient allergenic pollens (cedar) in Kanto, Japan were investigated. We found that allergenic protein particles (Ubisch body) with diameter less than 0.7 microm were absorbed on Japanese cedar pollen, and airborne particles which contained allergenic particles mainly distributed in < 1 microm size range. The highest mass concentration of chemical elements in Shanghai airborne particles was found in the 0.3-0.18 microm size range, but mass level of pollutant elements, such as S and Pb, in ambient in ultrafine (nano) particles were higher than that in coarse and fine particles. And also, pollen particles were found in Shanghai airborne particles. Synergistic effects between diesel exhaust particles (DEPs), which were the main component in urban airborne particles, and ambient pollens in urban atmosphere can be found, but their mechanism have not been clear. After our new results and other conclusions published recently on allergenic pollen and airborne fine/ultrafine particles were summarized, perspectives of this new discipline were presented.
城市大气中的环境颗粒物（PM）和致敏花粉对人类健康和空气质量产生了负面影响。这两种污染物之间的协同效应研究正受到大气科学、环境毒理学和免疫学等学科的关注。在本研究中，对中国上海空气中细/超细颗粒物以及日本关东地区环境致敏花粉（雪松）进行了理化特性研究。我们发现直径小于0.7微米的致敏蛋白颗粒（乌氏体）吸附在日本雪松花粉上，且含有致敏颗粒的空气传播颗粒主要分布在小于1微米的粒径范围内。上海空气中颗粒物中化学元素的最高质量浓度出现在0.3 - 0.18微米粒径范围内，但超细（纳米）颗粒中硫和铅等污染元素的质量水平高于粗颗粒和细颗粒。此外，在上海空气中颗粒物中也发现了花粉颗粒。城市空气传播颗粒的主要成分柴油尾气颗粒（DEP）与城市大气中的环境花粉之间存在协同效应，但其机制尚不清楚。在总结了我们最近发表的关于致敏花粉和空气传播细/超细颗粒物的新结果及其他结论后，提出了这一新学科的研究展望。
