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  • 1 Jožef Stefan Institute Department of Environmental Sciences Jamova 39 1000 Ljubljana Slovenia
  • | 2 Jožef Stefan Institute Department of Environmental Sciences Jamova 39 P.O. Box 3000 SI-1000 Ljubljana Slovenia
  • | 3 ANPA-National Environmental Protection Agency Via Vitaliano Brancati 48 00144 Roma Italy
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Abstract  

Adsorption of fine suspended material on the surface of aquatic plants may lead to great problems in the interpretation of results for their trace element composition, since it is quite impossible to clean the inorganic material from the biota completely. A carefully designed field experiment was performed in the River Stella in North-Eastern Italy aimed at studying the adsorption of fine suspended material on benthic algae-periphyton. More than 20 elements, were determined in water, suspended material and biota using k0-INAA, and enrichment factors were calculated for selected elements using Sc as a normalizing element.