Summary
A method is pressented using Sephadex G25 to separate the smallest molecules from a humic acid sample. This procedure can also be used to select a certain molecular range.
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Blondeau, R. Separation of low molecular weight humic acids with Sephadex G25. Plant Soil 87, 441–444 (1985). https://doi.org/10.1007/BF02181912
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DOI: https://doi.org/10.1007/BF02181912