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The main extractants investigated were sodium hydroxide (NaOH) and sodium hydroxide ethylenediaminetetraacetic acid (NaOH\u2010EDTA) with bicarbonate buffered dithionite (BD) or EDTA as pre\u2010extractants. Post extractions were conducted using either NaOH or NaOH\u2010EDTA, depending on the main extractant. Results showed that the most efficient combination of extractants for total P yield was NaOH with EDTA as pre\u2010extractant, 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\u2010extractant was the most efficient combination for these compound groups.<\/jats:p>","DOI":"10.2134\/jeq2006.0235","type":"journal-article","created":{"date-parts":[[2007,5,7]],"date-time":"2007-05-07T20:48:10Z","timestamp":1178570890000},"page":"892-898","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Sediment Phosphorus Extractants for Phosphorus\u201031 Nuclear Magnetic Resonance Analysis"],"prefix":"10.1002","volume":"36","author":[{"given":"Joakim","family":"Ahlgren","sequence":"first","affiliation":[{"name":"Dep. of Physical and Analytical Chemistry, Analytical Chemistry Uppsala Univ. Box 599 751 24 Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heidi","family":"De Brabandere","sequence":"additional","affiliation":[{"name":"Dep. of Physical and Analytical Chemistry, Analytical Chemistry Uppsala Univ. 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