Thermal analysis (TG-DTA) and drift spectroscopy applied to investigate the evolution of humic acids in forest soil at different vegetation stages
Humic acids (HAs) extracted from soils developed under two Norwegian spruce (Picea abies, (L.) Karst) subalpine forests of northern Italy were characterized using chemical, thermal (TG-DTA) and spectroscopic (DRIFT) analyses. The samples were taken from five sites which differed in orientation (nort...
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| Veröffentlicht in: | Journal of Thermal Analysis and Calorimetry 2006-02, Vol.83 (2), p.393-399 |
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| container_end_page | 399 |
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| container_title | Journal of Thermal Analysis and Calorimetry |
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| creator | MONTECCHIO, D FRANCIOSO, Ornella CARLETTI, P PIZZEGHELLO, D CHERSICH, S PREVITALI, F NARDI, S |
| description | Humic acids (HAs) extracted from soils developed under two Norwegian spruce (Picea abies, (L.) Karst) subalpine forests of northern Italy were characterized using chemical, thermal (TG-DTA) and spectroscopic (DRIFT) analyses. The samples were taken from five sites which differed in orientation (northern and southern exposure) and vegetal cover at different old age: grassland, regeneration, immature and mature stands. In general, the thermal patterns of HAs were similar (three exothermic reactions appeared around at 300, 400 and 500 deg C) in both sites in grasslands and regeneration while a considerable modification appeared in HA from stands of different age at northern and southern exposure site. DRIFT spectroscopy confirmed the differences observed through TG-DTA analysis. In particular the main structural changes were ascribed to modification of carbonyl group and of CH stretching in aliphatic components in each HAs from different sites. |
| doi_str_mv | 10.1007/s10973-005-7292-5 |
| format | Article |
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Karst) subalpine forests of northern Italy were characterized using chemical, thermal (TG-DTA) and spectroscopic (DRIFT) analyses. The samples were taken from five sites which differed in orientation (northern and southern exposure) and vegetal cover at different old age: grassland, regeneration, immature and mature stands. In general, the thermal patterns of HAs were similar (three exothermic reactions appeared around at 300, 400 and 500 deg C) in both sites in grasslands and regeneration while a considerable modification appeared in HA from stands of different age at northern and southern exposure site. DRIFT spectroscopy confirmed the differences observed through TG-DTA analysis. 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Psychology</topic><topic>Organic matter</topic><topic>Physics, chemistry, biochemistry and biology of agricultural and forest soils</topic><topic>Soil science</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MONTECCHIO, D</creatorcontrib><creatorcontrib>FRANCIOSO, Ornella</creatorcontrib><creatorcontrib>CARLETTI, P</creatorcontrib><creatorcontrib>PIZZEGHELLO, D</creatorcontrib><creatorcontrib>CHERSICH, S</creatorcontrib><creatorcontrib>PREVITALI, F</creatorcontrib><creatorcontrib>NARDI, S</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of Thermal Analysis and Calorimetry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MONTECCHIO, D</au><au>FRANCIOSO, Ornella</au><au>CARLETTI, P</au><au>PIZZEGHELLO, D</au><au>CHERSICH, S</au><au>PREVITALI, F</au><au>NARDI, S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal analysis (TG-DTA) and drift spectroscopy applied to investigate the evolution of humic acids in forest soil at different vegetation stages</atitle><jtitle>Journal of Thermal Analysis and Calorimetry</jtitle><date>2006-02-01</date><risdate>2006</risdate><volume>83</volume><issue>2</issue><spage>393</spage><epage>399</epage><pages>393-399</pages><issn>1388-6150</issn><eissn>1588-2926</eissn><eissn>1572-8943</eissn><eissn>0368-4466</eissn><abstract>Humic acids (HAs) extracted from soils developed under two Norwegian spruce (Picea abies, (L.) Karst) subalpine forests of northern Italy were characterized using chemical, thermal (TG-DTA) and spectroscopic (DRIFT) analyses. The samples were taken from five sites which differed in orientation (northern and southern exposure) and vegetal cover at different old age: grassland, regeneration, immature and mature stands. In general, the thermal patterns of HAs were similar (three exothermic reactions appeared around at 300, 400 and 500 deg C) in both sites in grasslands and regeneration while a considerable modification appeared in HA from stands of different age at northern and southern exposure site. DRIFT spectroscopy confirmed the differences observed through TG-DTA analysis. In particular the main structural changes were ascribed to modification of carbonyl group and of CH stretching in aliphatic components in each HAs from different sites.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1007/s10973-005-7292-5</doi><tpages>7</tpages></addata></record> |
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| subjects | Agronomy. Soil science and plant productions Biological and medical sciences Chemical, physicochemical, biochemical and biological properties Fundamental and applied biological sciences. Psychology Organic matter Physics, chemistry, biochemistry and biology of agricultural and forest soils Soil science |
| title | Thermal analysis (TG-DTA) and drift spectroscopy applied to investigate the evolution of humic acids in forest soil at different vegetation stages |
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