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Sediment phosphorus extractants for phosphorus-31 nuclear magnetic resonance analysis: A quantitative evaluation
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2007 (engelsk)Inngår i: Journal of Environmental Quality, ISSN 0047-2425, E-ISSN 1537-2537, Vol. 36, nr 3, s. 892-898Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

The influence of pre-extractant, extractant, and post-extractant on total extracted amounts of P and organic P compound groups measured with 31 P nuclear magnetic resonance (P-31-NMR) in lacustrine sediment was examined. The main extractants investigated were sodium hydroxide (NaOH) and sodium hydroxide ethylenediaminetetraacetic acid (NaOH-EDTA) with bicarbonate buffered dithionite (BD) or EDTA as pre-extractants. Post extractions were conducted using either NaOH or NaOH-EDTA, depending on the main extractant. Results showed that the most efficient combination of extractants for total P yield was NaOH with EDTA as pre-extractant, yielding almost 50% more than the second best procedure. The P compound groups varying the most between the different extraction procedures were polyphosphates and pyrophosphates. NaOH with BD as pre-extractant was the most efficient combination for these compound groups.

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Uppsala Univ, Dept Phys & Analyt Chem, S-75124 Uppsala, Sweden. Univ So Denmark, Inst Biol, DK-5230 Odense M, Denmark. Uppsala Univ, Dept Biochem & Organ Chem, S-75124 Uppsala, Sweden. Uppsala Univ, Dept Ecol & Evolut, S-75123 Uppsala, Sweden., 2007. Vol. 36, nr 3, s. 892-898
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URN: urn:nbn:se:umu:diva-113614DOI: 10.2134/jeq2006.0235ISI: 000246430500028PubMedID: 17485721OAI: oai:DiVA.org:umu-113614DiVA, id: diva2:886067
Tilgjengelig fra: 2015-12-21 Laget: 2015-12-21 Sist oppdatert: 2018-06-07

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Ahlgren, JoakimGogoll, Adolf

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