[Contribution to the study of inherited humin in several types of soil]
1980
Almendros, G. | Polo, A. | Dorado, E. (Consejo Superior de Investigaciones Cientificas, Madrid (Spain). Inst. de Edafologia y Biologia Vegetal)
إنجليزي. Inherited humin in several types of soil has been isolated, fractionated and characterizated by several methods. Inherited humin is a complex fraction in which composition contributes a certain quantity of humic and fulvic acids. In the inherited humin also remain a small quantity of bitumen, of polysaccharides, and a high percentage of ashes (principally constitued by clays). Thermal analysis show two principal pyrolysis phases, and infrared spectra present several bands corresponding to the organic functional groups and to the clays and other silicates which are associated with this fraction.
اظهر المزيد [+] اقل [-]إيطالي. E'stata isolata la frazione di umina ereditata in differenti tipi di suolo, allo scopo di realizzare il frazionamento e la sua caratterizzazione. L'umina ereditata appare come una frazione complessa con una discreta quantita di acidi umici e fulvici della sua composizione. Questa frazione mostra pur una piccola quantita di sostanze bituminose, di polisaccaridi, ed un'alta percentuale di ceneri, costituite principalmente da minerali della frazione argillosa. Mediante analisi termica (DTG, DTA) sono stati riconosciuti due stadi principali durante la pirolisi. Mediante spettroscopia infrarossa sono state identificate diverse bande corrispondenti a diversi gruppi funzionali.
اظهر المزيد [+] اقل [-]المعلومات البيبليوغرافية
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