The contribution of humic substances to the acidity of colored natural waters
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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 μeq/ mg humic organic carbon, and mass action quotient calculated from sample pH, the ionic balances of three highly colored Nova Scotia rivers were estimated.
Suggested Citation
Oliver, B., Thurman, E., and Malcolm, R., 1983, The contribution of humic substances to the acidity of colored natural waters: Geochimica et Cosmochimica Acta, v. 47, no. 11, p. 2031-2035, https://doi.org/10.1016/0016-7037(83)90218-1.
| 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 |
| DOI | 10.1016/0016-7037(83)90218-1 |
| Volume | 47 |
| Issue | 11 |
| Year Published | 1983 |
| Language | English |
| Publisher | Elsevier |
| Description | 5 p. |
| First page | 2031 |
| Last page | 2035 |