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  • 1 Institute for Inorganic Chemistry and Didactics of Chemistry Potsdam University PBox 60 15 53 14415 Potsdam Germany
  • 2 Institute for Geography and Geoecology Potsdam University PBox 60 15 53 14415 Potsdam Germany
  • 3 Institute for Physical and Theoretical Chemistry Potsdam University PBox 60 15 53 14415 Potsdam Germany
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Soil substrates of sewage farms (inflow of sewage areas) and of closed sewage farms were investigated by means of thermogravimetry and differential thermal analysis. The results were compared with those obtained for control samples from outside the sewage farms.