Potential bio-available phosphorus in sediments of the river Elbe in northern Germany
Wiltshire, K.H. (1990). Potential bio-available phosphorus in sediments of the river Elbe in northern Germany. Arch. Hydrobiol., Suppl.bd. Monogr. Beitr. 75(2): 281-297
In: Archiv für Hydrobiologie. Supplementband, Monographische Beiträge. Schweizerbart: Stuttgart. ISSN 0341-2881, more
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| Keywords |
Phosphorus
Properties > Sediment properties > Sediment structure
Fresh water |
| Abstract |
Sediments were subjected to a sequential extraction scheme, in order to assess the types and amounts of different phosphorus species present. The fraction characterization was according to the solution properties of the phosphorus components. The non-apatite, easily soluble fractions were classed as potentially bio-available compounds and accounted for up to 80% of the total extractable phosphorus present. In order to allow an assessment of extraction fractions sensitive to the presence of oxygen, the relevant extraction steps were carried out under anaerobic and aerobic conditions. It was found that under anaerobic conditions the more easily extractable compounds were extracted to a significantly higher degree than under aerobic conditions. |
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