Observation of black carbon aerosol in Beijing,2003 |
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Authors: | Lou Shujuan Mao Jietai and Wang Meihua |
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Institution: | (1) Beijing Weather Modification Office, Beijing, 100089, China;(2) Department of Atmospheric Sciences, Peking University, Beijing, 100871, China |
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Abstract: | The objective of this study was to determine the black carbon concentration in Beijing in 2003. The aerosol properties were
measured using an Aethalometer and a tapered element oscillating microbalance (TEOM) on the roof of the Physics Building of
Peking University (39.99° N, 116.31° E) from July to August 2003 and from November 2003 to January 2004. The average black
carbon (BC) concentrations in the summer and winter were 8.80 and 11.4 μg/m3, respectively. During winter, two different cyclone cut offs were installed at the inlet of an aethalometer. The BC mass
concentration in TSP, PM10, and PM2.5 were obtained. The results indicated that in winter aerosol, 90% of BC exited in PM10 and 82.6% of BC exited in PM2.5. The BC in PM10 accounted for 5.11% of the PM10 mass.
Translated from Acta Scientiae Circumstantiae, 2005, 25(1): 17–22 译自: 环境科学学报] |
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Keywords: | black carbon aerosol PM10 Aethalometer |
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