Loading concentration models for phosphate in shallow lakes
A theoretical mathematical formula is presented, describing the phosphate concentration in water and sediments of shallow lakes as a function of loading.
Experiments in vitro are described and agree, in principle, with the expected shape of the relationship curve. The curve shows that the phosphate concentration rises slowly during the early stages of eutrophica- tion and that, later, a much more rapid increase can be expected.
The importance of the apatite system for eutrophic hard waters is demonstrated.
Keywordsphosphate loadings models
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