English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18732
Título

Field study of methidathion in soil amended with biosolid and a cationic surfactant under different irrigation regimes. Solute transport modelling.

AutorSánchez, L.; Romero, Oscar E.; Castillo Martín, A.; Pena, Angelina
Fecha de publicación2006
EditorElsevier
CitaciónChemosphere 63(4): 616-625 (2006)
ResumenFour experimental plots located in Granada (Spain) were used to investigate the potential movement of the insecticide methidathion during three treatments in a period of three years. To increase pesticide soil retention a municipal biosolid and the cationic surfactant, tetradecyl trimethyl ammonium bromide (TDTMA), were used as soil amendments. The presence of the insecticide was monitored in soil and water samples at different depths up to one meter. Soil solution was sampled by ceramic suction cups installed at three depths (25, 75 and 100 cm). No effect of the amendments on pesticide mobility was observed. Experimental results showed that pesticide leaching occurred in the upper soil layer. Although some sporadic high water soil concentrations were found, these were attributed to preferential flow processes. This was confirmed by the absence of high pesticide concentration in soil samples at similar depths. Pesticide mobility was mainly affected by the irrigation employed. Experimental results were compared with theoretical data simulated with the mathematical model FocusPelmo. The resemblance between theoretical and experimental soil data seems to confirm the preferential flow processes. Otherwise, the lack of fit between the soil water data were attributed to the ceramic devices employed, that could suffer an "ageing process" which would cause bias in the determinations.
Versión del editorhttp://dx.doi.org/10.1016/j.chemosphere.2005.08.008
URIhttp://hdl.handle.net/10261/18732
DOI10.1016/j.chemosphere.2005.08.008
ISSN0045-6535
Aparece en las colecciones: (IACT) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.