Surfactant Effects on Picloram Adsorption by Soils
| Autor: | J. D. Gaynor, V. V. Volk |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Aqueous solution Inorganic chemistry Picloram 04 agricultural and veterinary sciences Plant Science 01 natural sciences 010602 entomology chemistry.chemical_compound Adsorption chemistry Pulmonary surfactant Soil water 040103 agronomy & agriculture Cation-exchange capacity 0401 agriculture forestry and fisheries Freundlich equation Organic matter Agronomy and Crop Science |
| Zdroj: | Weed Science. 24:549-552 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500062925 |
| Popis: | The effects of soil organic matter, clay, extractable Al, cation exchange capacity, and pH on the adsorption of picloram (4-amino-3,5,6-trichloropicolinic acid) from aqueous and surfactant solutions were investigated. Linear adsorption isotherms for the soils were obtained with the Freundlich equation. Of the five soil properties investigated, Freundlich K values correlated with extractable Al and clay content. Picloram adsorption from aqueous solutions and from the non-ionic and anionic surfactant solutions was greater on the soils at pH 5 than at pH 7. The anionic surfactant competed with picloram for adsorption sites on the soils at pH 5. Picloram adsorption from solutions containing 0.1 and 1% cationic surfactant was greater than that from aqeuous and anionic and nonionic surfactant solutions. Picloram adsorption from the 10% cationic surfactant solution was similar on soils with pH 5 and 7 and increased with decreased organic matter content. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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