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Release of Organic P Forms from Lake Sediments
Institute of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
Institute of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
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2011 (English)In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 45, no 2, 565-572 p.Article in journal (Refereed) Published
Abstract [en]

The effects of different physical and chemical conditions on the decomposition and release of organic and inorganic P compound groups from the sediment of Lake Erken were investigated in a series of laboratory experiments. Conditions investigated were temperature, oxygen level, and the effects of additions of carbon substrate (glucose) and poison (formalin). The effects on the P compound groups were determined by measurements with 31P NMR before and after the experiments, as well as analysis of P in effluent water throughout the experiment. Phosphate analysis of the effluent water showed that oxygen level was the most influential in terms of release rates, with the sediments under anoxic conditions generally releasing more phosphate than the other treatments. 31P NMR showed that the various treatments did influence the P compound group composition of the sediment. In particular, the addition of glucose led to a decrease in orthophosphate and polyphosphate while the addition of formalin led to a decrease in phosphorus lipids, DNAphosphate and polyphosphate. Oxic conditions resulted in an increase in polyphosphates, and anoxic conditions in a decrease in these. Temperature did not seem to affect the composition significantly.

Place, publisher, year, edition, pages
2011. Vol. 45, no 2, 565-572 p.
Keyword [en]
Organic phosphorus, Release Sediments, 31P NMR
National Category
Chemical Sciences
Research subject
Chemistry with specialization in Analytical Chemistry; Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-140274DOI: 10.1016/j.watres.2010.09.020ISI: 000286790500015PubMedID: 20947118OAI: oai:DiVA.org:uu-140274DiVA: diva2:383365
Available from: 2011-01-04 Created: 2011-01-04 Last updated: 2017-12-11Bibliographically approved

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Gogoll, Adolf

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