Constantes de Freundlich kF de algunos plaguicidas en un suelo volcánico de Poás de Alajuela, Costa Rica
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| Autors: | , |
|---|---|
| Format: | artículo original |
| Estat: | Versión publicada |
| Data de publicació: | 2018 |
| Descripció: | The contaminant attenuation in soils is a complex physical, chemical and biological process, which requires an experimental approach for its understanding. Batch experiments were carried out on samples of andisols taken between August and September 2016 from a coffee plantation in Poas de Alajuela to obtain the kF (mg/L) Freundlich constant and the kFoc normalized constant by 0,12 (mode of the existent organic matter fraction), for the substances (kF-kFoc): ametryn 62 - 517; atrazine 18 - 150; bromacil 5.3 - 44; carbaryl 36 - 300; chlorothalonil 45 - 375; hexazinone 3.2 - 27; simazine 5.2 - 43; and terbutryn 60 - 500. The results indicate that between 75 % and 95 % of the mass of the substances is withdrawn from the supernatant aqueous solution and suggest that these soils could reduce a pollutant mass that drags the recharge water by preventing it from reaching the groundwater. |
| Pais: | Portal de Revistas UCR |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/34634 |
| Accés en línia: | https://revistas.ucr.ac.cr/index.php/cienciaytecnologia/article/view/34634 |
| Paraula clau: | pollutant attenuation volcanic soil sorption pesticides herbicides ametryn atrazine bromacil carbaryl chlorothalonil hexazinone simazine terbutryn andisols Poás Costa Rica unsaturated zone. atenuación de contaminantes sorción en suelos volcánicos plaguicidas herbicidas ametrina atrazina carbaril clorotalonil hexazinona simazina terbutrina andisoles zona no saturada. |