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Evolution of mixing state of black carbon in polluted air from Tokyo
Open accessAbstract
The evolution of the mixing state of black carbon aerosol (BC) was investigated using a single‐particle soot photometer (SP2) in polluted air transported from Tokyo. Ground‐based measurements of aerosols and trace gases were conducted at a suburban site (Kisai) 50 km north of Tokyo during July–August 2004. The ratio of 2‐pentyl nitrate (2‐PeONO 2) to n‐pentane (n‐C 5 H 12) was used to derive the photochemical age. According to the SP2 measurement, the number fraction of thickly coated BC (Shell/Corel Ratio > ca. 2) with a core diameter of 180 nm increased at the rate of 1.9% h−1, as the photochemical clock proceeded under land‐sea breeze circulation. Positive matrix factorization was applied to investigate the time‐dependent contributions of different coating materials using the mass concentrations of sulfate, nitrate, and organics measured using an aerosol mass spectrometer. The main coating materials found in this study were sulfate and organics.
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Cited by
Bounding the role of black carbon in the climate system: A scientific assessment
Bond, T. C., Doherty, S. J., Fahey, D. W., Forster, P. M., Berntsen, T., DeAngelo, B. J., Flanner, M. G., Ghan, S., Kärcher, B., Koch, D., et al. (2013) · Journal of Geophysical Research: Atmospheres · doi:10.1002/jgrd.50171 · Cited by 6,385
Self-citationPöschl, U., & Shiraiwa, M. (2015) · Chemical Reviews · doi:10.1021/cr500487s · Cited by 657
Self-citationEvolution of trace gases and particles emitted by a chaparral fire in California
Akagi, S. K., Craven, J. S., Taylor, J. W., McMeeking, G. R., Yokelson, R. J., Burling, I. R., Urbanski, S. P., Wold, C. E., Seinfeld, J. H., Coe, H., et al. (2012) · Atmospheric Chemistry and Physics · doi:10.5194/acp-12-1397-2012 · Cited by 353
Metadata
- Authors
- Shiraiwa, M., Kondo, Y., Moteki, N., Takegawa, N., Miyazaki, Y., & Blake, D. R.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2007-08-16
- Volume
- 34
- Issue
- 16
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2143297655
- Cited by
- 161
- References
- 0
- FWCI
- 6.00
- Type
- journal article
- Language
- en
- Open access
- green
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- Shiraiwa, M., Kondo, Y., Moteki, N., Takegawa, N., Miyazaki, Y., & Blake, D. R. (2007). Evolution of mixing state of black carbon in polluted air from Tokyo. Geophysical Research Letters. https://doi.org/10.1029/2007gl029819
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