Estudo de sorção de herbicidas pelos argilominerais vermiculita e montmorilonita

The clay minerals montmorillonite (MT) and vermiculite (VT), previously treated with Ca2+, K+ and Na+, were employed in a sorption study with herbicides. The herbicides 2,4-D, diuron, alachlor and metolachlor showed no interaction with MT and VT. On the other hand, the triazines presented a good sor...

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Bibliographic Details
Published in:Química Nova 2011, Vol.34 (1), p.21-27
Main Authors: Rezende, Edivaltrys Inayve Pissinati de, Peralta-Zamora, Patricio Guillermo, Abate, Gilberto
Format: Article
Language:English
Subjects:
clay minerals
preconcentration
water
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Summary:The clay minerals montmorillonite (MT) and vermiculite (VT), previously treated with Ca2+, K+ and Na+, were employed in a sorption study with herbicides. The herbicides 2,4-D, diuron, alachlor and metolachlor showed no interaction with MT and VT. On the other hand, the triazines presented a good sorption process, close to 100% for ametrine removal and near to 56 and 69% for atrazine and simazine, respectively, by MT. These results suggest that the MT specie may be a good material for triazines removal from aqueous medium and an alternative phase to preconcentration process, besides to exhibit a good selectivity.
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422011000100005