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Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions

Article DOI: 10.3791/58927-v • 08:38 min • February 15th, 2019
February 15th, 2019 •
1, 1
1Faculty of Geosciences and Environment, University of Lausanne

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Summary
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Combined size and density fractionation (CSDF) is a method to physically separate soil into fractions differing in texture (particle size) and mineralogy (density). The purpose is to isolate fractions with different reactivities towards soil organic matter (SOM), in order to better understand organo-mineral interactions and SOM dynamics.

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Combined Size And Density Fractionation Soils Investigations Organo-Mineral Interactions Fractionates Soil Organic Matter Physical Fractionation Process Natural Composition Sequester Carbon Free Light Fraction Sodium Polytungstate SPT Swinging Bucket Centrifuge Clear Separation Pellet Polycarbonate Centrifuge Bottle Rinse Material Deionized Water Vacuum Ultrafiltration
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