Simultaneous adsorption of chlordimeform and zinc on montmorillonite
نویسندگان
چکیده
The competitive adsorption of the cationic pesticide chlordimeform and the heavy metal zinc on montmorillonite was studied. For different concentrations of Zn used, chlordimeform decreases (in relation to Zn-free treatments) when the pesticide is adsorbed simultaneously with the metal, but increases when Zn is adsorbed previously to chlordimeform. When comparing the Ko values chlordimeform is shown to have a higher affinity for montmorillonite when there is a previous adsorption of Zn than with the simultaneous adsorption of Zn and the pesticide. The adsorption of Zn decreases when chlordimeform concentration increases, in both cases, when the metal is adsorbed simultaneously with the pesticide and when chlordimeform has been previously adsorbed to Zn.
منابع مشابه
Adsorption-Desorption of Chlordimeform on Montmorillonite: Effect of Clay Aggregation and Competitive Adsorption with Cadmium
T O M Á S U N D A B E Y T I A , * , † S H L O M O N I R , † T A M A R A P O L U B E S O V A , † G I O R A R Y T W O , † , ‡ E S M E R A L D A M O R I L L O , § A N D C E L I A M A Q U E D A § Seagram Center for Soil and Water Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, P.O. Box 12, Rehovot 76100, Israel, Tel Hai Academic College, Upper Galilee, 12210 Israel, and ...
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