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Study of Antarctic Aerosol using X-Ray Fluorescence and Single Particle Analysis
(1992) Rojas, Carlos; Van Grieken, René; Cantillano, Eugenia
During the XXIV Scientific Antarctic Expedition, supported by the Instituto Antártico Chileno, a set of 8 aerosol samples was collected at the Chilean Antarctic Base "Bernardo O'Higgins". The samples were analyzed by electron-probe X-ray microanalysis (EPXMA) and energy-dispersive X-ray fluorescence (EDXRF). Concentrations of the detected elements (Si, P, S, K, Ca, Fe, Ni, Cu, Zn and Pb) are much higher than those reported in the literature. The aerosol had a predominant marine origin and high Zn concentrations suggest the presence of an anthropogenic source such as incineration waste. Individual particle analysis showed that the fine fraction had an average diameter of 0.67 um, whereas that of the coarse fraction was 5.6 um. Both fine and coarse mode aerosols presented a lognormal size distribution.
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