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The contribution of humic substances to the acidity of colored natural waters

Geochimica et Cosmochimica Acta

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Abstract

An operationally defined carboxyl content of humic substances extracted from rivers, streams, lakes, wetlands, and groundwaters throughout the United States and Canada is reported. Despite the diversity of the samples, only small variations were observed in this humic carboxyl content. The dissociation behavior of two combined fulvic/humic acid extracts was studied and it was found that the dissociation of the humics varied in a predictable manner with pH. Using a carboxyl content of 10 ??eq/ mg humic organic carbon, and mass action quotient calculated from sample pH, the ionic balances of three highly colored Nova Scotia rivers were estimated. ?? 1983.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The contribution of humic substances to the acidity of colored natural waters
Series title:
Geochimica et Cosmochimica Acta
Volume
47
Issue:
11
Year Published:
1983
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geochimica et Cosmochimica Acta
First page:
2031
Last page:
2035
Number of Pages:
5