INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE

The phosphorus distribution in soil (<2 mm) and in clay size separates (<2 mu m) of two uncultivated volcanic soils from southern Chile (one Ultisol and one Andisol) was studied by phosphorus-31 nuclear magnetic resonance spectroscopy (31P-NMR). The total P content ranges of the Ultisol sample...

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Autores principales:	ESCUDEY,MAURICIO, GALINDO,GERARDO, BRICEÑO,MARGARITA, CHANG,ANDREW C.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2004
Materias:	organic P forms volcanic soil particle size 31P-NMR
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000100002
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spelling	oai:scielo:S0717-970720040001000022004-05-11INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILEESCUDEY,MAURICIOGALINDO,GERARDOBRICEÑO,MARGARITACHANG,ANDREW C. organic P forms volcanic soil particle size 31P-NMR The phosphorus distribution in soil (<2 mm) and in clay size separates (<2 mu m) of two uncultivated volcanic soils from southern Chile (one Ultisol and one Andisol) was studied by phosphorus-31 nuclear magnetic resonance spectroscopy (31P-NMR). The total P content ranges of the Ultisol samples were 733-1108 mg kg-1 (soil) and 746-896 mg kg-1 (clay), lower than 2163-2216 mg kg-1 (soil) and 2683-3362 mg kg-1 (clay) obtained for Andisol samples. In both fractions the 31P-NMR spectra of a single alkaline extraction, using 0.25 M NaOH and Chelex 100, showed the presence of inorganic orthophosphate, monoester-P, diester-P and pyrophosphate. Phospholipids-teichoic acids P were observed, but only in the clay size separates of the Andisol. Important differences in spectra of soils and clay size separates were observed only in samples with high organic matter content. The clay size separates enriched with organic matter have more and better defined signals of organic P forms. This allows the identification of P forms that might not be detected by 31P-NMR in the whole soil extractsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.49 n.1 20042004-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000100002en10.4067/S0717-97072004000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	organic P forms volcanic soil particle size 31P-NMR
spellingShingle	organic P forms volcanic soil particle size 31P-NMR ESCUDEY,MAURICIO GALINDO,GERARDO BRICEÑO,MARGARITA CHANG,ANDREW C. INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
description	The phosphorus distribution in soil (<2 mm) and in clay size separates (<2 mu m) of two uncultivated volcanic soils from southern Chile (one Ultisol and one Andisol) was studied by phosphorus-31 nuclear magnetic resonance spectroscopy (31P-NMR). The total P content ranges of the Ultisol samples were 733-1108 mg kg-1 (soil) and 746-896 mg kg-1 (clay), lower than 2163-2216 mg kg-1 (soil) and 2683-3362 mg kg-1 (clay) obtained for Andisol samples. In both fractions the 31P-NMR spectra of a single alkaline extraction, using 0.25 M NaOH and Chelex 100, showed the presence of inorganic orthophosphate, monoester-P, diester-P and pyrophosphate. Phospholipids-teichoic acids P were observed, but only in the clay size separates of the Andisol. Important differences in spectra of soils and clay size separates were observed only in samples with high organic matter content. The clay size separates enriched with organic matter have more and better defined signals of organic P forms. This allows the identification of P forms that might not be detected by 31P-NMR in the whole soil extracts
author	ESCUDEY,MAURICIO GALINDO,GERARDO BRICEÑO,MARGARITA CHANG,ANDREW C.
author_facet	ESCUDEY,MAURICIO GALINDO,GERARDO BRICEÑO,MARGARITA CHANG,ANDREW C.
author_sort	ESCUDEY,MAURICIO
title	INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
title_short	INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
title_full	INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
title_fullStr	INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
title_full_unstemmed	INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE
title_sort	influence of particle size on 31p-nmr analysis of extracts from volcanic ash-derived soils in chile
publisher	Sociedad Chilena de Química
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000100002
work_keys_str_mv	AT escudeymauricio influenceofparticlesizeon31pnmranalysisofextractsfromvolcanicashderivedsoilsinchile AT galindogerardo influenceofparticlesizeon31pnmranalysisofextractsfromvolcanicashderivedsoilsinchile AT bricenomargarita influenceofparticlesizeon31pnmranalysisofextractsfromvolcanicashderivedsoilsinchile AT changandrewc influenceofparticlesizeon31pnmranalysisofextractsfromvolcanicashderivedsoilsinchile
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INFLUENCE OF PARTICLE SIZE ON 31P-NMR ANALYSIS OF EXTRACTS FROM VOLCANIC ASH-DERIVED SOILS IN CHILE

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