Factors influencing the degradation of dimethoate in soils and solutions
| Autor: | D. E. Cotton, I. O. D. El Beit, J. V. Wheelock |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
chemistry.chemical_classification
Ecology Geography Planning and Development Alkalinity Evaporation Salt (chemistry) Pesticide complex mixtures Pollution chemistry.chemical_compound chemistry Environmental chemistry Soil water Urea Degradation (geology) Computers in Earth Sciences Waste Management and Disposal Dimethoate |
| Zdroj: | International Journal of Environmental Studies. 11:253-260 |
| ISSN: | 1029-0400 0020-7233 |
| Popis: | It was found that pH, temperature and the type of medium are important factors affecting the stability of dimethoate in soils and solutions. Evaporation is a minor factor in determining the loss of dimethoate from water. Within the pH range of 7–11, dimethoate degradation depends on the alkalinity of the medium rather than the time of storage. At pH 4.2 degradation is largely dependent on the length of time the dimethoate solution has been stored. Acid or salt concentration has little effect on the degree of degradation when the pH is maintained constant. Liming the soil results in a decrease in leachability and in retention of the pesticide by the soil. Conversely, treatment with urea increases both leachability and retention of the pesticide, but decreases its degradation in the soil. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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