Long-range transport of particulate polycyclic aromatic hydrocarbons at Cape Hedo remote island site in the East China Sea between 2005 and 2008

被引：24
|
作者：
Sato, Kei [1 ,2 ]
Li, Hong [2 ,3 ]
Tanaka, Yurie [4 ]
Ogawa, Shiho [4 ]
Iwasaki, Yuka [5 ]
Takami, Akinori [1 ]
Hatakeyama, Shiro [1 ,2 ,4 ,5 ]
机构：
[1] Natl Inst Environm Studies, Asian Environm Res Grp, Tsukuba, Ibaraki 3058506, Japan
[2] Natl Inst Environm Studies, Div Atmospher Environm, Tsukuba, Ibaraki 3058506, Japan
[3] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
[4] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058577, Japan
[5] Tokyo Univ Agr & Technol, Fuchu, Tokyo 1838509, Japan
来源：
JOURNAL OF ATMOSPHERIC CHEMISTRY | 2008年 / 61卷 / 03期
基金：
日本学术振兴会;
关键词：
East Asia; Asian Pacific region; Air pollution; Atmospheric Brown Clouds-Asia; Organic aerosol; Long-range transport; Photochemical aerosol aging; Secondary organic aerosol formation;
D O I：
10.1007/s10874-009-9135-4
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Particle-associated polycyclic aromatic hydrocarbons (PAHs) in outflow from East Asia were observed at Cape Hedo, Okinawa, Japan between 2005 and 2008. The filter samples of the total suspended particles were analyzed by means of gas chromatography-mass spectrometry. The total concentration of fourteen 3-7-ring PAHs was 0.01-24 ng m(-3) (average 1.6 ng m(-3)). The average PAH concentration increased in the winter-spring season and decreased in the summer-fall season. The average benzo(a)pyrene to benzo(e)pyrene ratio was 0.49 in the winter-spring season and was lower than the literature values for East Asian cities in the same season. This result shows that aging of organic aerosol particles proceeds during long-range transport from East Asia. In the Asian Pacific region, these pollutants are transported from East Asia in the winter-spring season, whereas clean air mass is transported from the Pacific Ocean in the summer-fall season.
引用
收藏
页码：243 / 257
页数：15
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