Dissolved organic matter in Chascom�s Pond (Argentina). Influence of calcium carbonate on humic acid concentration
| Autor: | Alicia Fernández Cirelli, Victor H. Conzonno |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
chemistry.chemical_classification
Calcite Supersaturation humic substances Mineralogy calcium carbonate supersaturation Chascomds Pond dissolved organic matter Aquatic Science chemistry.chemical_compound Adsorption Calcium carbonate chemistry Environmental chemistry Dissolved organic carbon Ciencias Naturales Humic acid Organic matter Saturation (chemistry) |
| Zdroj: | SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| ISSN: | 1573-5117 0018-8158 |
| Popis: | Water chemistry of the Chascomus Pond (Province of Buenos Aires, Argentina) was studied during a year characterized by low precipitation. Supersaturation of calcium carbonate up to a calcite saturation index of about 20 in spring and summer was observed, together with a diminution of the concentration of dissolved organic matter, in particular humic substances (HS). These results suggested an adsorption between organic matter and calcium carbonate which should influence the growth of calcium carbonate crystals. A preferential removal of higher molecular weight HS was observed by gel permeation chromatography experiments. Instituto de Limnología "Dr. Raúl A. Ringuelet" Universidad de Buenos Aires |
| Databáze: | OpenAIRE |
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