Soil adsorption of 2,4‐D as affected by the clay mineralogy

@article{Hermosn1991SoilAO,
  title={Soil adsorption of 2,4‐D as affected by the clay mineralogy},
  author={M. C. Hermos{\'i}n and J. Cornejo},
  journal={Toxicological \& Environmental Chemistry},
  year={1991},
  volume={31},
  pages={69-77}
}
The adsorption of 2,4‐D has been studied obtaining adsorption isotherms on 22 soils by the batch equilibration technique. Fitting the adsorption data to the Freundlich equation three adsorption capacity were calculated at low (Kf or Cs 1), medium (Cs4.5) and high (Cs 30) 2,4‐D concentration. The adsorption capacity and intensity factors obtained in this study resulted in according with those reported by other authors. From the simple regression analysis between adsorption capacities and soil… Expand

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References

SHOWING 1-10 OF 20 REFERENCES
ADSORPTION AND DESORPTION OF MALEIC HYDRAZIDE AS A FUNCTION OF SOIL PROPERTIES
The relationships between maleic hydrazide (MH) adsorption and selected properties for 22 soils were studied by determining adsorption isotherms in aqueous media and calculating simple correlationExpand
Assessing factors related to pesticide adsorption by soils
Relationships between adsorption of two organic agrochemicals (a non‐ionic, Maleic Hydrazide: MH, and a cationic, Chlordimeform: CF) and the properties of 22 soils were investigated taking intoExpand
ADSORPTION OF SOME MONOHYDROXYBENZENE DERIVATIVES BY SOILS
Natural soil materials react with derivatives of benzene in water under saturated conditions slowly, with equilibration times of up to 5 days. The Freundlich isotherm equation fits best thoseExpand
Sorption of selected organic pollutants in Danish soils.
  • H. Løkke
  • Chemistry, Medicine
  • Ecotoxicology and environmental safety
  • 1984
TLDR
The sorption of benzoic acid, nitrobenzene, 4-nitrophenol, 2,4-dichlorophenoxyacetic acid, and naphthalene was determined for 10 Danish soils in laboratory studies and adsorption was significantly correlated with the organic carbon content of the soils tested. Expand
ADSORPTION OF THE HERBICIDE 2,4‐D ON GOETHITE
Summary Adsorption, of the herbicide 2,4-Dichlorophenoxyacetic acid (2,4-D) on an iron oxide, goethite, was studied in aqueous suspensions as a function of solution pH, ionic strength of theExpand
COMPONENTS AND PARTICLE SIZE FRACTIONS INVOLVED IN ATRAZINE ADSORPTION BY SOILS1
We used two Saskatchewan soils to investigate the relative importance of sesquioxides, organic matter, and a series of particle size fractions in adsorbing atrazine. The DCB (sodiumExpand
The adsorption of phenoxyacetic acid herbicides on goethite
The adsorption behavior of the phenoxyacetic acid herbicides on goethite has been studied as a function of solution pH and concentration of herbicide. Adsorption of these compounds, which areExpand
A Mathematical Model for the Fate of Hazardous Substances in Soil: Model Description and Experimental Results
A mathematical model (VIP) was developed and implemented for evaluating the fate of a hazardous substance in the unsaturated zone of the soil. The model simulates vadose zone processes includingExpand
Factors influencing entry of pesticides into soil water
Leaching of pesticides and hence the risk of contamination of ground-water depends on the physicochemical properties of the pesticide, the properties of the soil and the weather. Lipophilicity is theExpand
Evaluation of a simulation model for prediction of herbicide movement and persistence in soil
Summary The movement and persistence of residues of propyzamide, linuron, isoxaben and R-40244 were measured in a sandy loam soil in field experiments prepared in spring and autumn. None of theExpand
...
1
2
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