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Published March 16, 2006 | Supplemental Material + Published
Journal Article Open

Size-resolved particulate matter composition in Beijing during pollution and dust events


Each spring, Beijing, China, experiences dust storms which cause high particulate matter concentrations. Beijing also has many anthropogenic sources of particulate matter including the large Capitol Steel Company. On the basis of measured size segregated, speciated particulate matter concentrations, and calculated back trajectories, three types of pollution events occurred in Beijing from 22 March to 1 April 2001: dust storms, urban pollution events, and an industrial pollution event. For each event type, the source of each measured element is determined to be soil or anthropogenic and profiles are created that characterize the particulate matter composition. Dust storms are associated with winds traveling from desert regions and high total suspended particle (TSP) and PM2.5 concentrations. Sixty-two percent of TSP is due to elements with oxides and 98% of that is from soil. Urban pollution events have smaller particulate concentrations but 49% of the TSP is from soil, indicating that dust is a major component of the particulate matter even when there is not an active dust storm. The industrial pollution event is characterized by winds from the southwest, the location of the Capitol Steel Company, and high particulate concentrations. PM2.5 mass and acidic ion concentrations are highest during the industrial pollution event as are Mn, Zn, As, Rb, Cd, Cs and Pb concentrations. These elements can be used as tracers for industrial pollution from the steel mill complex. The industrial pollution is potentially more detrimental to human health than dust storms due to higher PM2.5 concentrations and higher acidic ion and toxic particulate matter concentrations.

Additional Information

© 2006 American Geophysical Union. Received 22 June 2005; revised 12 October 2005; accepted 1 December 2005; published 7 March 2006. The authors would like to thank Lynn Salmon for assistance in sampling and for IC and OC/EC analysis, DRI for the XRF analysis, and Mike Arndt for the ICP-MS analysis.

Attached Files

Published - jgrd12464.pdf

Supplemental Material - jgrd12464-sup-0001-readme.txt

Supplemental Material - jgrd12464-sup-0002-fs01.eps

Supplemental Material - jgrd12464-sup-0003-txts01.txt

Supplemental Material - jgrd12464-sup-0004-ts01.txt

Supplemental Material - jgrd12464-sup-0005-ts02.txt

Supplemental Material - jgrd12464-sup-0006-ts03.txt

Supplemental Material - jgrd12464-sup-0007-ts04.txt

Supplemental Material - jgrd12464-sup-0008-fs02.eps

Supplemental Material - jgrd12464-sup-0009-fs03.eps

Supplemental Material - jgrd12464-sup-0010-fs04.eps

Supplemental Material - jgrd12464-sup-0011-fs05.eps

Supplemental Material - jgrd12464-sup-0012-fs06.eps

Supplemental Material - jgrd12464-sup-0013-t01.txt

Supplemental Material - jgrd12464-sup-0014-t02.txt


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August 22, 2023
October 18, 2023