PCDD/PCDF-Kontaminationen aus Kieselrot von Sport- und Spielanlagen |
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Authors: | Ekkehard Schuller Harald Heinz Helmut Stoffers |
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Institution: | 1. TüV Umwelttechnik GmbH im TüV Hessen, Mergenthalerallee 27, D-65760, Eschborn 2. TüV Hannover/Sachsen-Anhalt e. V., Am TüV 1, D-30519, Hannover
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Abstract: | Surfaces of many sports fields, playgrounds and paths in Germany are covered with red slag ?Kieselrot”. Kieselrot is extremely high contaminated by polychlorinated dibenzodioxines and dibenzofurans. Mean PCDD/F-concentration in surface layers of 35 locations in Hessen is 45 500 ng I-TE/kg. PCDD/F-contents range from 1 000 to 250 ng I-TE/kg within 10 cm under surface layers and from 6 000 to 600 ng I-TE/kg in top soils of three metres wide peripheral areas. Concentration in subsoils is a function of depth (n=18, r=?0,741), concentration in topsoils of peripheral areas is a function of distance from large sports fields (n=14, r=?0,881) or small sportsfields (n=23, r=?0,742), respectively. A 15 metres wide and 10 centimetres deep peripheral area contains 0,8 g I-TE PCDD/F. The pollution of surroundings and further observations indicate that ?Kieselrot-areas” must be regarded as important dioxin sources. |
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