Evolution of submicron organic aerosol in polluted air exported from Tokyo

被引：51

作者：

Takegawa, N.

Miyakawa, T.

Kondo, Y.

Blake, D. R.

Kanaya, Y.

Koike, M.

Fukuda, M.

Komazaki, Y.

Miyazaki, Y.

Shimono, A.

Takeuchi, T.

机构：

[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

[2] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[3] Japan Agcy Marine Earth Sci & Technol, Frontier Res Ctr Global Change, Kanazawa Ku, Kanagawa 2360001, Japan

[4] Univ Tokyo, Grad Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan

[5] Sanyu Plant Serv Co Ltd, Kanagawa 2291132, Japan

[6] Ctr Environm Sci Saitama, Kisai, Saitama 3470115, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2006年 / 33卷 / 15期

关键词：

D O I：

10.1029/2006GL025815

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Ground-based measurements of aerosols and trace gases were conducted at an urban site in Tokyo (Komaba) and a site 50 km to the north (Kisai) during July - August 2004. An Aerodyne aerosol mass spectrometer (AMS) was deployed at each measurement site to investigate the chemical evolution of submicron organic aerosol (OA) in polluted air. The mass concentrations of OA at the Kisai site were systematically higher than those at the Komaba site and were correlated with ozone under southerly conditions. The rate of increase of OA at the Kisai site is investigated using the photochemical age derived from the ratio of alkyl nitrates to their parent hydrocarbons. The OA concentrations in processed air ( age of 8 - 16 h) were 4 - 5 times larger than those in fresh emissions ( age similar to 0), suggesting that the OA concentrations can be significantly enhanced within similar to 0.5 days under conditions of high photochemical activity.

引用

页数：5

共 17 条

[1] Budget of organic carbon in a polluted atmosphere: Results from the New England Air Quality Study in 2002 [J].