Evaluation of ultrafiltration for determining molecular weight of fulvic acid

Environmental Science & Technology
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Abstract

Two commonly used ultrafiltration membranes are evaluated for the determination of molecular weights of humic substances. Polyacrylic acids of Mr 2000 and 5000 and two well-characterized fulvic acids are used as standards. Molecular size characteristics of standards, as determined by small-angle X-ray scattering, are presented. Great care in evaluating molecular weight data obtained by ultrafiltration is needed because of broad nominal cutoffs and membrane-solute interactions.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Evaluation of ultrafiltration for determining molecular weight of fulvic acid
Series title Environmental Science & Technology
DOI 10.1021/es00130a016
Volume 18
Issue 12
Year Published 1984
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Environmental Science and Technology
First page 978
Last page 981
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