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Mechanisms of interaction between montmorillonite and 3-aminotriazole
The adsorption of aminotriazole, at its solution pH, with montmorillonite saturated with different cations has been studied. A pesticide-montmorillonite complex is formed through interlamellar cations which are not displaced. Aminotriazole is situated mostly as a polarized molecule around Mg2+ and Zn2+ cations, removing a great amount of water. In Na+- and Li+-montmorillonite, the pesticide remains as a non-polarized molecule, hydration water being retained in the interlamellar space; the pesticide is coordinated to interlamellar cations through water bridges. For all samples a proportion of cationic aminotriazole is also adsorbed, the amount being greater with increasing polarizing power of the interlamellar cation; consequently, in Fe3+-montmorillonite all the aminotriazole adsorbed is in the cationic form. ; The authors acknowledge the Direcci6n General de Investigaci6n Científica y Técnica, Spain, for financial support of this work through Project PB87-0240. ; Peer Reviewed
Mechanisms of interaction between montmorillonite and 3-aminotriazole
The adsorption of aminotriazole, at its solution pH, with montmorillonite saturated with different cations has been studied. A pesticide-montmorillonite complex is formed through interlamellar cations which are not displaced. Aminotriazole is situated mostly as a polarized molecule around Mg2+ and Zn2+ cations, removing a great amount of water. In Na+- and Li+-montmorillonite, the pesticide remains as a non-polarized molecule, hydration water being retained in the interlamellar space; the pesticide is coordinated to interlamellar cations through water bridges. For all samples a proportion of cationic aminotriazole is also adsorbed, the amount being greater with increasing polarizing power of the interlamellar cation; consequently, in Fe3+-montmorillonite all the aminotriazole adsorbed is in the cationic form. ; The authors acknowledge the Direcci6n General de Investigaci6n Científica y Técnica, Spain, for financial support of this work through Project PB87-0240. ; Peer Reviewed
Mechanisms of interaction between montmorillonite and 3-aminotriazole
1991-01-01
Article (Journal)
Electronic Resource
English
DDC:
690
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