The Buffer Capacity of Calcareous Soils in Gansu Province of China
| Autor: | Song Yongjie, Tao Zuyi, Chu Taiwei, Du Jinzhou |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Ecology Mineralogy complex mixtures Alkali soil chemistry.chemical_compound Calcium carbonate chemistry Environmental chemistry Soil water Cation-exchange capacity General Earth and Planetary Sciences Environmental science Carbonate Organic matter Chemical composition Calcareous Ecology Evolution Behavior and Systematics General Environmental Science |
| Zdroj: | Chemistry and Ecology. 13:213-222 |
| ISSN: | 1029-0370 0275-7540 |
| DOI: | 10.1080/02757549708035528 |
| Popis: | In this study, we added increments of acid and base to three calcareous soils from the eastern, middle and western parts of Gansu Province (China) and to three treated soils to remove calcium carbonate, organic matter and both carbonate and organic matter, respectively. the titration curves were measured and the magnitudes of buffer capacities as a function of pH were computed. It was found that the buffer capacity of calcareous soil is mainly attributed to calcium carbonate, as expected from the chemical composition of calcareous soil, while cation exchange system, silicate buffer system and organic matter play a minor role. the results clearly show that these soils of Gansu Province will not become a problem in the near future from the entrance of H+ into these soils. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|