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- W2136504268 endingPage "306" @default.
- W2136504268 startingPage "294" @default.
- W2136504268 abstract "Organic phosphorus is an important component of soil biogeochemical cycles, but must be extracted from soil prior to analysis. Here we critically review the extraction of soil organic phosphorus, including procedures for quantification, speciation, and assessment of biological availability. Quantitative extraction conventionally requires strong acids and bases, which inevitably alter chemical structure. However, a single-step procedure involving sodium hydroxide and EDTA (ethylenediaminetetraacetate) is suitable for most soils and facilitates subsequent speciation by nuclear magnetic resonance spectroscopy. Analysis of extracts by molybdate colorimetry is a potential source of error in all procedures, because organic phosphorus is overestimated in the presence of inorganic polyphosphates or complexes between inorganic phosphate and humic substances. Sequential extraction schemes fractionate organic phosphorus based on chemical solubility, but the link to potential bioavailability is misleading. Research should be directed urgently towards establishing extractable pools of soil organic phosphorus with ecological relevance." @default.
- W2136504268 created "2016-06-24" @default.
- W2136504268 creator A5008058337 @default.
- W2136504268 creator A5009344010 @default.
- W2136504268 creator A5049956320 @default.
- W2136504268 creator A5050967722 @default.
- W2136504268 date "2005-04-15" @default.
- W2136504268 modified "2023-10-16" @default.
- W2136504268 title "Extraction of soil organic phosphorus" @default.
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