Effetto dei trattamenti termici e chimici sulla capacità di scambio della frazione argillosa di alcuni suoli bruni
Articolo
Data di Pubblicazione:
1981
Citazione:
Effetto dei trattamenti termici e chimici
sulla capacità di scambio della frazione argillosa
di alcuni suoli bruni / Melis, Pietro; De Cherchi, M. L.; Gessa, Carlo Emanuele; Premoli, Alessandra Maria. - In: STUDI SASSARESI. SEZIONE 3: ANNALI DELLA FACOLTÀ DI AGRARIA DELL'UNIVERSITÀ DI SASSARI. - ISSN 0562-2662. - 28 (1980-1981):(1981), pp. 40-49.
Abstract:
Variations of permanent and pH-dependent charges of soil clays subjected to thermal and chemical
treatments were studied. The permanent charge was considerably reduced either on heating samples at 400°C or on acid treatment. A strong hysteresis of the permanent charge occurred
in the heated samples treated with NaOH.
The decrease in permanent charge after attack with HCl was due to vermiculite decomposition.
The different behaviour of the pH-dependent charge was attributed to the structural changes
which different treatments can give rise on the interlayer materials.
treatments were studied. The permanent charge was considerably reduced either on heating samples at 400°C or on acid treatment. A strong hysteresis of the permanent charge occurred
in the heated samples treated with NaOH.
The decrease in permanent charge after attack with HCl was due to vermiculite decomposition.
The different behaviour of the pH-dependent charge was attributed to the structural changes
which different treatments can give rise on the interlayer materials.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Soils; thermal and chemical treatments; permanent and pH-dependent charges
Elenco autori:
Melis, Pietro; De Cherchi, M. L.; Gessa, Carlo Emanuele; Premoli, Alessandra Maria
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