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Extraction of soil organic matter under chemically mild conditions



Extraction of soil organic matter under chemically mild conditions



Communications in Soil Science & Plant Analysis 15(3): 295-308



Large additions of urea greatly increased the effectiveness of some chemically mild extractants of soil organic matter. Brief agitation with an ultrasonic disintegrator also enhanced the action of these mixed solutions. With a range of soils, 0.05M Na4P2O7 in 8M urea extracted at least as much soil C as 0.05M Na4P2O7 in 0.5M NaOH. A solution of 0.3M NaHCO3 in 8M urea usually extracts less C but introduces only Na+ as a mineral contaminant.

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Accession: 001364957

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DOI: 10.1080/00103628409367476


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