The structural composition of humic compounds as indicator of organic carbon sources
Various analytical techniques ( 13C-NMR, FTIR, elemental analysis) have been used to study the structures of humic compounds present in the sediments of Martignano lake located 50 km from Roma city (Italy). The total amount of humic compounds present in the upper layer of sediments is practically co...
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| Veröffentlicht in: | Talanta (Oxford) 1999-06, Vol.49 (2), p.277-284 |
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| creator | Calace, N Capolei, M Lucchese, M Petronio, B.M |
| description | Various analytical techniques (
13C-NMR, FTIR, elemental analysis) have been used to study the structures of humic compounds present in the sediments of Martignano lake located 50 km from Roma city (Italy). The total amount of humic compounds present in the upper layer of sediments is practically constant; instead, considering humic (HA) and fulvic acids (FA) separately, it can be noticed that while HA increase remarkably from A
1 to A
3, FA diminish, probably as a result of the continuous transformation of algal debris, present in large amount in A
1, from compounds which are in an early stage of decomposition to more highly degraded organic matter. In deeper layers the percentage both of HA and FA is constant and slightly lower than that found in the upper layer, except for two sampling points. In these stations the amount of both HA and FA are very high and the carbohydrate peak areas of HA and FA increase along with the depth, reflecting the presence of a well localized source of organic carbon or different environmental conditions. |
| doi_str_mv | 10.1016/S0039-9140(98)00370-1 |
| format | Article |
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13C-NMR, FTIR, elemental analysis) have been used to study the structures of humic compounds present in the sediments of Martignano lake located 50 km from Roma city (Italy). The total amount of humic compounds present in the upper layer of sediments is practically constant; instead, considering humic (HA) and fulvic acids (FA) separately, it can be noticed that while HA increase remarkably from A
1 to A
3, FA diminish, probably as a result of the continuous transformation of algal debris, present in large amount in A
1, from compounds which are in an early stage of decomposition to more highly degraded organic matter. In deeper layers the percentage both of HA and FA is constant and slightly lower than that found in the upper layer, except for two sampling points. In these stations the amount of both HA and FA are very high and the carbohydrate peak areas of HA and FA increase along with the depth, reflecting the presence of a well localized source of organic carbon or different environmental conditions.</description><identifier>ISSN: 0039-9140</identifier><identifier>EISSN: 1873-3573</identifier><identifier>DOI: 10.1016/S0039-9140(98)00370-1</identifier><identifier>PMID: 18967598</identifier><identifier>CODEN: TLNTA2</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Geochemistry ; Humic compounds structures ; Lacustrine environment ; Marine and continental quaternary ; Sediments ; Soil and rock geochemistry ; Spectroscopic analysis ; Surficial geology</subject><ispartof>Talanta (Oxford), 1999-06, Vol.49 (2), p.277-284</ispartof><rights>1999 Elsevier Science B.V.</rights><rights>1999 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c391t-86d7260dc1f275ca6ba574c29e9a6eb05149dc285264d4a908be7c8ae949cec83</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0039-9140(98)00370-1$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1861422$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18967598$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Calace, N</creatorcontrib><creatorcontrib>Capolei, M</creatorcontrib><creatorcontrib>Lucchese, M</creatorcontrib><creatorcontrib>Petronio, B.M</creatorcontrib><title>The structural composition of humic compounds as indicator of organic carbon sources</title><title>Talanta (Oxford)</title><addtitle>Talanta</addtitle><description>Various analytical techniques (
13C-NMR, FTIR, elemental analysis) have been used to study the structures of humic compounds present in the sediments of Martignano lake located 50 km from Roma city (Italy). The total amount of humic compounds present in the upper layer of sediments is practically constant; instead, considering humic (HA) and fulvic acids (FA) separately, it can be noticed that while HA increase remarkably from A
1 to A
3, FA diminish, probably as a result of the continuous transformation of algal debris, present in large amount in A
1, from compounds which are in an early stage of decomposition to more highly degraded organic matter. In deeper layers the percentage both of HA and FA is constant and slightly lower than that found in the upper layer, except for two sampling points. In these stations the amount of both HA and FA are very high and the carbohydrate peak areas of HA and FA increase along with the depth, reflecting the presence of a well localized source of organic carbon or different environmental conditions.</description><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geochemistry</subject><subject>Humic compounds structures</subject><subject>Lacustrine environment</subject><subject>Marine and continental quaternary</subject><subject>Sediments</subject><subject>Soil and rock geochemistry</subject><subject>Spectroscopic analysis</subject><subject>Surficial geology</subject><issn>0039-9140</issn><issn>1873-3573</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqFkE1P3DAQhq0KVJYtP6EoB6TSQ6g_ktg-oQq1pRISB5az5YwnxVUSbz0JUv99s-yq9NbTyOPn9Ywfxt4LfiW4aD49cK5saUXFL635uBw0L8UbthJGq1LVWh2x1V_khJ0S_eScS8XVW3YijG10bc2KbTZPWNCUZ5jm7PsC0rBNFKeYxiJ1xdM8RNg35zFQ4amIY4jgp5R39yn_8OOO8LldEpTmDEjv2HHne8KzQ12zx69fNje35d39t-83n-9KUFZMpWmClg0PIDqpa_BN62tdgbRofYMtr0VlA0hTy6YKlbfctKjBeLSVBQSj1uzD_t1tTr9mpMkNkQD73o-YZnJaKSNNtfx5zeo9CTkRZezcNsfB599OcLfz6V58up0sZ4178enEkjs_TJjbAcNr6iBwAS4OgCfwfZf9CJH-4RpRSblg13sMFx3PEbMjiDgChpgRJhdS_M8mfwAj6pKF</recordid><startdate>19990614</startdate><enddate>19990614</enddate><creator>Calace, N</creator><creator>Capolei, M</creator><creator>Lucchese, M</creator><creator>Petronio, B.M</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19990614</creationdate><title>The structural composition of humic compounds as indicator of organic carbon sources</title><author>Calace, N ; Capolei, M ; Lucchese, M ; Petronio, B.M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-86d7260dc1f275ca6ba574c29e9a6eb05149dc285264d4a908be7c8ae949cec83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Geochemistry</topic><topic>Humic compounds structures</topic><topic>Lacustrine environment</topic><topic>Marine and continental quaternary</topic><topic>Sediments</topic><topic>Soil and rock geochemistry</topic><topic>Spectroscopic analysis</topic><topic>Surficial geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Calace, N</creatorcontrib><creatorcontrib>Capolei, M</creatorcontrib><creatorcontrib>Lucchese, M</creatorcontrib><creatorcontrib>Petronio, B.M</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Talanta (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Calace, N</au><au>Capolei, M</au><au>Lucchese, M</au><au>Petronio, B.M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The structural composition of humic compounds as indicator of organic carbon sources</atitle><jtitle>Talanta (Oxford)</jtitle><addtitle>Talanta</addtitle><date>1999-06-14</date><risdate>1999</risdate><volume>49</volume><issue>2</issue><spage>277</spage><epage>284</epage><pages>277-284</pages><issn>0039-9140</issn><eissn>1873-3573</eissn><coden>TLNTA2</coden><abstract>Various analytical techniques (
13C-NMR, FTIR, elemental analysis) have been used to study the structures of humic compounds present in the sediments of Martignano lake located 50 km from Roma city (Italy). The total amount of humic compounds present in the upper layer of sediments is practically constant; instead, considering humic (HA) and fulvic acids (FA) separately, it can be noticed that while HA increase remarkably from A
1 to A
3, FA diminish, probably as a result of the continuous transformation of algal debris, present in large amount in A
1, from compounds which are in an early stage of decomposition to more highly degraded organic matter. In deeper layers the percentage both of HA and FA is constant and slightly lower than that found in the upper layer, except for two sampling points. In these stations the amount of both HA and FA are very high and the carbohydrate peak areas of HA and FA increase along with the depth, reflecting the presence of a well localized source of organic carbon or different environmental conditions.</abstract><cop>Amsterdam</cop><cop>Oxford</cop><pub>Elsevier B.V</pub><pmid>18967598</pmid><doi>10.1016/S0039-9140(98)00370-1</doi><tpages>8</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Geochemistry Humic compounds structures Lacustrine environment Marine and continental quaternary Sediments Soil and rock geochemistry Spectroscopic analysis Surficial geology |
| title | The structural composition of humic compounds as indicator of organic carbon sources |
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