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Contribution of Organic Acid Anions to the Alkalinity of Natural Humic Water

Contribution of Organic Acid Anions to the Alkalinity of Natural Humic Water It was found that the correction for organic acid anions to the alkalinity of water depends on the concentration of these anions, their dissociation constant, and pH; for humic water, it is expressed by the equation [Δ HCO 3 − ] = [A org − ](0.094 – 9064 × 10−pH). Based on this equation and data on the alkalinity and ion balance of water, the concentrations of hydrogen carbonates and organic acid anions can be calculated. In accordance with the found average dissociation constant of humic acids (pK = 4.0), the contribution of their anions to the alkalinity of water is no higher than 10% of their concentration. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Analytical Chemistry Springer Journals

Contribution of Organic Acid Anions to the Alkalinity of Natural Humic Water

Lozovik, P.
Journal of Analytical Chemistry , Volume 60 (11) – Nov 14, 2005
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References (3)

Publisher
Springer Journals
Copyright
Copyright © 2005 by MAIK "Nauka/Interperiodica"
Subject
Chemistry; Analytical Chemistry
ISSN
1061-9348
eISSN
1608-3199
DOI
10.1007/s10809-005-0226-3
Publisher site
See Article on Publisher Site

Abstract

It was found that the correction for organic acid anions to the alkalinity of water depends on the concentration of these anions, their dissociation constant, and pH; for humic water, it is expressed by the equation [Δ HCO 3 − ] = [A org − ](0.094 – 9064 × 10−pH). Based on this equation and data on the alkalinity and ion balance of water, the concentrations of hydrogen carbonates and organic acid anions can be calculated. In accordance with the found average dissociation constant of humic acids (pK = 4.0), the contribution of their anions to the alkalinity of water is no higher than 10% of their concentration.

Journal

Journal of Analytical Chemistry – Springer Journals

Published: Nov 14, 2005

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