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dc.contributor.authorMcDowell, Richarden
dc.contributor.authorCondron, Leo M.en
dc.contributor.authorMahieu, N.en
dc.contributor.authorBrookes, P.en
dc.contributor.authorPoulton, P.en
dc.contributor.authorSharpley, A. N.en
dc.date.accessioned2010-04-20T02:14:14Z
dc.date.issued2002en
dc.identifier.citationMcDowell, R. W., Condron, L. M., Mahieu, N., Brookes, P. C., Poulton, P. R., & Sharpley, A. N. (2002). Analysis of potentially mobile phosphorus in arable soils using solid state nuclear magnetic resonance. Journal of Environmental Quality, 31(2), 450-456.en
dc.identifier.issn0047-2425en
dc.identifier.urihttps://hdl.handle.net/10182/1700
dc.description.abstractIn many intensive agroecosystems continued inputs of phosphorus (P) over many years can significantly increase soil P concentrations and the risk of P loss to surface waters. For this study we used solid-state ³¹P nuclear magnetic resonance (NMR) spectroscopy, high-power decoupling with magic angle spinning (HPDec–MAS) NMR, and cross polarization with magic angle spinning (CP–MAS) NMR to determine the chemical nature of potentially mobile P associated with aluminum (Al) and calcium (Ca) in selected arable soils. Three soils with a range of bicarbonate-extractable Olsen P concentrations (40–102 mg P kg⁻¹) were obtained from a long-term field experiment on continuous root crops at Rothamsted, UK, established in 1843 (sampled 1958). This soil has a threshold or change point at 59 mg Olsen P kg⁻¹, above which potentially mobile P (as determined by extraction with water or 0.01 M CaCl₂) increases much more per unit increase in Olsen P than below this point. Results showed that CaCl₂ and water preferentially extracted Al-P and Ca-P forms, respectively, from the soils. Comparison among the different soils also indicated that potentially mobile P above the threshold was largely present as a combination of soluble and loosely adsorbed (protonated–cross polarized) P forms largely associated with Ca, such as monetite (CaHPO₄) and dicalcium phosphate dihydrate (CaHPO₄·2H₂O), and some Al-associated P as wavellite. The findings of this study demonstrate that solid-state NMR has the potential to provide accurate information on the chemical nature of soil P species and their potential mobility.en
dc.format.extent450-456en
dc.language.isoenen
dc.publisherAmerican Society of Agronomy, Crop Science Society of America, and Soil Science Society of Americaen
dc.relationThe original publication is available from - American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America - http://jeq.scijournals.org/cgi/content/full/31/2/450en
dc.rightsCopyright © 2002 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of Americaen
dc.subjectphosphorusen
dc.subjectsoilen
dc.subjectnuclear magnetic resonance spectroscopyen
dc.subjectAgronomy & Agricultureen
dc.subject.meshEnvironmental Pollutantsen
dc.subject.meshSoil Pollutantsen
dc.subject.meshWater Pollutantsen
dc.subject.meshMagnetic Resonance Imagingen
dc.subject.meshEcosystemen
dc.subject.meshSolubilityen
dc.subject.meshAgricultureen
dc.titleAnalysis of potentially mobile phosphorus in arable soils using solid state nuclear magnetic resonanceen
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciences::300103 Soil chemistryen
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
lu.contributor.uniten
lu.contributor.uniten
dc.subject.anzsrc05 Environmental Sciencesen
dc.subject.anzsrc06 Biological Sciencesen
dc.subject.anzsrc04 Earth Sciencesen
dc.relation.isPartOfJournal of Environmental Qualityen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/2018 PBRF Staff group
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://jeq.scijournals.org/cgi/content/full/31/2/450en
pubs.volume31en
lu.identifier.orcid0000-0002-3082-994X
lu.identifier.orcid0000-0003-3911-4825


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