Abstract
Soil mobility of a complete humic acid and high and medium molecular weight fractions was determined by a soil TLC method. High and medium molecular weight fractions were obtained by ultrafiltration and then labeled with radioiodine. Infrared, visible- and UV spectra, as well as isotachophoretic studies, showed marked differences among the three humic fractions. The results obtained made evident the presence of soil mobile humic fractions of medium molecular weight. Alkalinization increased the soil mobility of humic acid.
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Mirave, J.P., Orioli, G.A. Edaphic mobility of complete humic acid and fractions of high and medium molecular weight. Plant Soil 104, 169–174 (1987). https://doi.org/10.1007/BF02372529
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DOI: https://doi.org/10.1007/BF02372529