Geochemistry of airborne particles from the lower troposphere of Terra Nova Bay, Antarctica

Details Geochemistry of airborne particles from the lower troposphere of Terra Nova Bay, Antarctica Geochemistry of airborne particles from the lower troposphere of Terra Nova Bay, Antarctica

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992tellb..44..304g&link_type=abstract

Tellus, Series B - Chemical and Physical Meteorology (ISSN 0280-6509), vol. 44B, no. 4, p. 304-310.

Other

3

Antarctic Regions, Geochemistry, Trace Elements, Troposphere, Aerosols, Chemical Composition, Meteorology, Particulates, Sediments

Scientific paper

Major and trace constituents (soluble + insoluble) of wind-blow particles collected at Terra Nova Bay were studied and the data compared with lacustrine and marine sediments from the same area and the Ross Sea. Compared to the geochemical composition of the other local sediments, the aerosol was found to be slightly enriched in femic minerals and depleted in Si. The Transantarctic Mountains (granitoids and metamorphic rocks) are proposed as the main source of the large (D greater than 4 microns) insoluble particles, with a possible contribution from nearby volcanoes. The soluble fraction accounts for more than 2/3 of the total mass loading and is mainly composed of marine salts. Some traces of contamination due to emissions from human activities were found in the aerosol, with mean Pb enrichment factor (EFcrust) value of 181. Crustal Pb contribution accounts for less than 10 percent, marine Pb less than 0.01 percent and 90 percent of Pb is unaccounted.

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