Journal ArticleDOI
A comparative study of number-average dissociation-corrected molecular weights of fulvic acids isolated from water and soil
Stephen A. Wilson,James H. Weber +1 more
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In this paper, the authors described the cryoscopic determination of the dissociation-corrected number-average molecular weights −MN corr of fulvic acid samples isolated from soil and water.About:
This article is published in Chemical Geology.The article was published on 1977-01-01. It has received 40 citations till now. The article focuses on the topics: Podzol.read more
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Book
Organic geochemistry of natural waters
TL;DR: The first part of the book as mentioned in this paper is a general overview of the amount and general nature of dissolved organic carbon in natural waters, and the second part is a summary of the data that has accumulated from many disciplines over the last decade.
Journal ArticleDOI
Fluorescence quenching titration for determination of complexing capacities and stability constants of fulvic acid
David K. Ryan,James H. Weber +1 more
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Molecular size of aquatic humic substances
TL;DR: The molecular size of aquatic humic substances, determined by small-angle X-ray scattering, varies from 4.7 to 33 A in their radius of gyration, corresponding to a molecular weight range of 500 to greater than 10,000 as discussed by the authors.
ReportDOI
Humic substances in the Suwannee River, Georgia; interactions, properties, and proposed structures
TL;DR: The Okefenokee Swamp as discussed by the authors is a swamp in South Carolina that is known for its geology, geology and chemical characteristics, including peat deposits and tree islands.
References
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Journal ArticleDOI
Disssociation constants of organic acids in aqueous solution
G. Kortüm,W. Vogel,K. Andrussow +2 more
Journal ArticleDOI
Complexation of iron(II) by organic matter and its effect on iron(II) oxygenation
Thomas L. Theis,Philip C. Singer +1 more
Journal ArticleDOI
Gel chromatography of humic acid
R. S. Swift,A. M. Posner +1 more
TL;DR: In this article, it was shown that a fractionation based solely on molecular weight differences can be achieved by using an alkaline buffer containing a large ammo cation as eluant together with Bio-gel, Sephadex, or an agar based gel.
Journal ArticleDOI
Titration curves of fulvic acid: the analytical chemistry of a weak acid polyelectrolyte'
TL;DR: The fulvic acid molecular weight fraction has two general types of carboxyl groups, one of which is ortho to phenolic -OH groups as mentioned in this paper, and the number of each type per gram of fulvic acids has been me...
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Stability constants for the complexation of copper(II) ions with water and soil fulvic acids measured by an ion selective electrode
The isolation and characterization of fulvic acid and humic acid from river water
James H. Weber,S.A. Wilson +1 more