Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/415
Título: The nonreversibility of adsorption-desorption of dieldrin and lindane on chitin in seawater
Autores/as: Santana-Casiano, J. Magdalena 
Pérez Peña, Jesús 
González-Dávila, Melchor 
Clasificación UNESCO: 251002 Oceanografía química
Palabras clave: Lindano
Adsorción
Quitina
Adsorption
Desorption, et al.
Fecha de publicación: 1992
Publicación seriada: International Journal of Environmental Analytical Chemistry 
Resumen: Adsorption and desorption of dieldrin and lindane on chitin were investigated in seawater batch tests as a function of chitin concentration, temperature, pH and salinity. For chitin concentrations ranging from 0.5 g l−1 to 12.5 g l−1, the pesticide concentrations were varied from 4 μgl−1 to 65 μg−1 for dieldrin and from 40 μl−1 to 680 μg l−1 for lindane. Both dieldrin and lindane show adsorption-desorption hysteresis at low chitin concentration. At high chitin concentrations (m > 6.25 g l−1 for dieldrin and m > 10 gl−1 for lindane) both pesticides exhibit reversible behaviour. However, only lindane adsorption is affected by chitin concentration. These types of behaviour remain fixed in prewashed chitin. However, an increase in the temperature and a decrease in the salinity made the process become reversible. A resistant-reversible two component model has been applied to account for these types of behaviour and provides a way to explain most of the observed effects by defining mass independent distribution coefficients.
URI: http://hdl.handle.net/10553/415
ISSN: 0306-7319
DOI: 10.1080/03067319208027007
Fuente: International Journal of Environmental Analytical Chemistry [ISSN 0306-7319], v. 46 (1-3), p. 163-174, (Marzo 1992)
Colección:Artículos
miniatura
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