Trace elements in tropical African savanna biomass burning aerosols

During the FOS/DECAFE 91 experiments, conducted in the Ivory Coast, the composition of atmospheric particulate matter and trace-element fluxes were determined for different savanna burning conditions. The resulting data set was used to assess specific tracers of biomass burning. Emission factors wer...

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Bibliographic Details
Published in:Journal of atmospheric chemistry 1995-10, Vol.22 (1-2), p.19-39
Main Authors: Gaudichet, A, Echalar, F, Chatenet, B, Quisefit, J P, Malingre, G, Cachier, H, Buat-Menard, P, Artaxo, P, Maenhaut, W
Format: Article
Language:English
Subjects:
Continental interfaces, environment
Ocean, Atmosphere
Sciences of the Universe
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Summary:During the FOS/DECAFE 91 experiments, conducted in the Ivory Coast, the composition of atmospheric particulate matter and trace-element fluxes were determined for different savanna burning conditions. The resulting data set was used to assess specific tracers of biomass burning. Emission factors were calculated for these trace elements, using a carbon dioxide normalization. Data are presented on the soil-derived and biomass-burning trace elements. Microscopic analysis of particles collected inside the plumes pointed out the presence of submicrometer soot particles, salt condensates, vegetation relicts, and soil-derived particles. The very high concentration of typical terrigeneous trace elements, such as aluminum, iron, and titanium, indicated that the biomass burning was a remobilization process of soil-derived particles. The ratio of sulfur, chlorine, potassium, copper, and zinc combustion-derived concentrations to total particulate matter remained stable in the flaming phase and could be used as specific tracers of savanna-burning emissions.
ISSN:0167-7764
1573-0662
DOI:10.1007/bf00708179