Comparison between the organic fraction of suspended matter at a background and an urban station |
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| Authors: | W. Cautreels K. Van Cauwenberghe L.A. Guzman |
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| Affiliation: | Department of Chemistry, University of Antwerp (U.I.A.), B-2610 Wdrijk,Belgium;Instituto de Investigaciones Fisicas, Universidad Mayor de San Andres, La Paz Bolivia |
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| Abstract: | Airborne particulate matter was sampled near the Cosmic Ray Laboratory of Chacaltaya, Bolivia, about 25 km NE of La Paz, at an altitude of 5200 m.Quantitative analysis of organic compounds was performed on two combined samples by gas chromatography-mass spectrometry with computerized data acquisition. Results are presented for aliphatic and polyaromatic hydrocarbons, fatty acids and heterocyclic arenes.A comparison is made with the results obtained from samples collected in a residential city area of Antwerp, Belgium. Polyaromatic hydrocarbons are found to be present in lower concentrations in the Bolivian samples by a factor of 10 to 300. For other compounds no meaningful differences are observed. The amount of the total suspended particulate matter per unit of volume is about three times lower in the remote area compared to the residential area. |
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