Sorption and desorption of sulfadimethoxine, sulfaquinoxaline and sulfamethazine antimicrobials in Brazilian soils
| Autor: | Keity Margareth Doretto, Livia Maniero Peruchi, Susanne Rath |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Environmental Engineering
Sulfadimethoxine Sulfaquinoxaline Soil chemistry.chemical_compound Adsorption Anti-Infective Agents Desorption Sulfanilamides medicine Soil Pollutants Environmental Chemistry Freundlich equation Waste Management and Disposal Sulfamethazine Sorption Pollution Bioavailability Models Chemical chemistry Environmental chemistry Soil water Brazil medicine.drug |
| Zdroj: | Science of The Total Environment. :406-414 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2014.01.024 |
| Popis: | Adsorption and desorption are important processes that influence the transport, transformation and bioavailability of antimicrobials in soils. The adsorption-desorption characteristics of sulfadimethoxine, sulfaquinoxaline and sulfamethazine in Brazilian soils (sandy, sandy-clay and clay) were evaluated using the batch equilibrium method. The sulfonamides were quantified in the soil solutions by a previously in house validated HPLC-PAD method. The adsorption/desorption data for the sulfonamides in soils fit the Freundlich isotherms well in the logarithmic form. The Freundlich adsorption coefficients ranged from 1.4 to 19.0 μg(1-1/n)(cm(3))(1/n)g(-1), suggesting that all of the sulfonamides weakly adsorbed on the evaluated soils. The Freundlich desorption coefficients ranged from 0.85 to 24.8 μg(1-1/n)(cm(3))(1/n)g(-1), indicating that the sulfonamides tend to be leached from soils with high sand and low organic carbon contents, suggesting that there is high potential for surface and groundwater contamination. |
| Databáze: | OpenAIRE |
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