Calculation of molecular weights of humic substances from colligative data: Application to aquatic humus and its molecular size fractions

Details Calculation of molecular weights of humic substances from colligative data: Application to aquatic humus and its molecular size fractions Calculation of molecular weights of humic substances from colligative data: Application to aquatic humus and its molecular size fractions

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45.2017r&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 45, Issue 11, pp.2017-2022

Mathematics

Scientific paper

A rigorous mathematical expression for the dependence of colligative properties on acid dissociation of water soluble humic substances is presented. New data for number average molecular weights of a river derived humic material and its gel permeation Chromatographic fractions are compared with values obtained by a reevaluation of previously published experimental observations on soil and water fulvic acids. The results reveal a remarkable similarity of fulvic acids from widely different sources with respect to number-average molecular weight.

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