Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4
The interaction of aminotriazole (AMT) al pH 4 on Wyoming monimorillunite (mainly with Na ions) and Mg-vermiculite has been studied by X-ray diffraction and infrared spectroscopy. The AMT is adsorbed on montmorillonite in the cationic form by cation exchange. The amount of pesticide adsorbed was 71 mEq/100 g, which comprises ∼91% of the CEC of this sample (78.2 mEq/100 g). Saturation was reached in 24 h, giving rise to a complex with basal spacing 12.5 Å. Vermiculite adsorbs 167 mEq/100 g, almost 20% greater than the CEC (141 mEq/100 g). and the basal spacing was stabilited at 13.68 Å after five weeks of treatment with AMT. A part of the AMT is adsorbed in cationic form, displacing a great pan of the exchangeable Mg2+ cations. The rest is adsorbed in molecular form by coordination to the Mg2+ cations which remain in the interlamellar space, removing a great amount of water, and remaining in the interlamellur space of vermiculite after wushing with water, probably because of a steric hindrance from the AMT cations adsorbed.
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Mineralogical Society (Great Britain)
1997
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dig-irnas-es-10261-621892018-09-13T07:49:12Z Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 Morillo González, Esmeralda Pérez Rodríguez, José Luis Rodríguez-Rubio, P. Maqueda Porras, Celia The interaction of aminotriazole (AMT) al pH 4 on Wyoming monimorillunite (mainly with Na ions) and Mg-vermiculite has been studied by X-ray diffraction and infrared spectroscopy. The AMT is adsorbed on montmorillonite in the cationic form by cation exchange. The amount of pesticide adsorbed was 71 mEq/100 g, which comprises ∼91% of the CEC of this sample (78.2 mEq/100 g). Saturation was reached in 24 h, giving rise to a complex with basal spacing 12.5 Å. Vermiculite adsorbs 167 mEq/100 g, almost 20% greater than the CEC (141 mEq/100 g). and the basal spacing was stabilited at 13.68 Å after five weeks of treatment with AMT. A part of the AMT is adsorbed in cationic form, displacing a great pan of the exchangeable Mg2+ cations. The rest is adsorbed in molecular form by coordination to the Mg2+ cations which remain in the interlamellar space, removing a great amount of water, and remaining in the interlamellur space of vermiculite after wushing with water, probably because of a steric hindrance from the AMT cations adsorbed. Peer Reviewed 2012-12-07T22:12:36Z 2012-12-07T22:12:36Z 1997 2012-12-07T22:12:36Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0009-8558 e-issn: 1471-8030 Clay Minerals 32(2): 307-313 (1997) http://hdl.handle.net/10261/62189 10.1180/claymin.1997.032.2.11 en http://dx.doi.org/10.1180/claymin.1997.032.2.11 open Mineralogical Society (Great Britain) |
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The interaction of aminotriazole (AMT) al pH 4 on Wyoming monimorillunite (mainly with Na ions) and Mg-vermiculite has been studied by X-ray diffraction and infrared spectroscopy. The AMT is adsorbed on montmorillonite in the cationic form by cation exchange. The amount of pesticide adsorbed was 71 mEq/100 g, which comprises ∼91% of the CEC of this sample (78.2 mEq/100 g). Saturation was reached in 24 h, giving rise to a complex with basal spacing 12.5 Å. Vermiculite adsorbs 167 mEq/100 g, almost 20% greater than the CEC (141 mEq/100 g). and the basal spacing was stabilited at 13.68 Å after five weeks of treatment with AMT. A part of the AMT is adsorbed in cationic form, displacing a great pan of the exchangeable Mg2+ cations. The rest is adsorbed in molecular form by coordination to the Mg2+ cations which remain in the interlamellar space, removing a great amount of water, and remaining in the interlamellur space of vermiculite after wushing with water, probably because of a steric hindrance from the AMT cations adsorbed. |
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artículo |
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Morillo González, Esmeralda Pérez Rodríguez, José Luis Rodríguez-Rubio, P. Maqueda Porras, Celia |
spellingShingle |
Morillo González, Esmeralda Pérez Rodríguez, José Luis Rodríguez-Rubio, P. Maqueda Porras, Celia Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
author_facet |
Morillo González, Esmeralda Pérez Rodríguez, José Luis Rodríguez-Rubio, P. Maqueda Porras, Celia |
author_sort |
Morillo González, Esmeralda |
title |
Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
title_short |
Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
title_full |
Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
title_fullStr |
Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
title_full_unstemmed |
Interaction of aminotriazole with montmorillonite and Mg-vermiculite at pH 4 |
title_sort |
interaction of aminotriazole with montmorillonite and mg-vermiculite at ph 4 |
publisher |
Mineralogical Society (Great Britain) |
publishDate |
1997 |
url |
http://hdl.handle.net/10261/62189 |
work_keys_str_mv |
AT morillogonzalezesmeralda interactionofaminotriazolewithmontmorilloniteandmgvermiculiteatph4 AT perezrodriguezjoseluis interactionofaminotriazolewithmontmorilloniteandmgvermiculiteatph4 AT rodriguezrubiop interactionofaminotriazolewithmontmorilloniteandmgvermiculiteatph4 AT maquedaporrascelia interactionofaminotriazolewithmontmorilloniteandmgvermiculiteatph4 |
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1777664459721932800 |