Author(s)

E. Roekens, J. Dumollin and C. Matheeussen

Abstract

In the telemetric network of Flanders the total amount of PM10 dust is measured since 1995. In the period 1970-1997 the black smoke content was measured extensively. At the beginning, black smoke concentrations up to 60 and 100 ug/nf as moving annual values were measured. The concentrations were reduced to 10 to 30 ug/nf in the nineties. In the networks heavy metals, PAHs and dioxins specific components of the aerosols are measured. The lead content of outdoor air decreased significantly, as well in agglomerations, as in industrial areas. However, in some industrial zones the content of Pb and other metals in the air remains too high. The concentration of benzo(a)pyrene in 1998 was lower than 1 ng/nf as annual mean. A significant decrease in the dioxin deposition was noticed in th

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