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Título: | Pyrolisis gas chromatography of humic substances from different origin |
Autor: | Martín Martínez, Francisco | Fecha de publicación: | 1975 | Citación: | Zeitschrift für Pflanzenernährung und Bodenkunde 4-5: 407-416 (1975) | Resumen: | Humic substances produce by pyrolysis among low boiling point compounds alkanes and olefins. The unique difference found in the humic and fulvic acids is not the presence or absence of some compounds but their amount. The production of such compounds is catalyzed in part by the ash content, and they arise through radical reactions principally from the aliphatic and/or alicyclic chains attached to the core. When the humic substances are oxidized by heating in air the alkanes and olefins are not produced in the pyrolysis. By pyrolysis gas chromatography it is possible to detect little differences among humic substances not found by the usual analytical techniques. | Descripción: | 10 pages, 5 figures, 3 tables, 21 references. | URI: | http://hdl.handle.net/10261/54773 |
Aparece en las colecciones: | (IRNAS) Artículos |
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