Abstract
The phosphate adsorption capacity of Neusiedlersee suspended sediments was evaluated using a silicone oil-filter-centrifugation technique with 32P and 3H-H20 labelling. This technique is quick, convenient and allows uptake processes to be followed during the first few seconds. The time dependent phosphate uptake was tested for concentration and pH dependency; the highest uptake was recorded at pH 9.00. The high calcite proportion in the sestonic material seems to influence the adsorption process. The kinetics of adsorption (at lake orthophosphate level and pH) could be explained by a biphasic Langmuir isotherm.
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