Molecular characterization of suspended and sedimentary organic matter in an Arctic delta
Curie-point pyrolysis-gas chromatography (CuPy-GC) and Curie-point pyrolysis-gas chromatography-mass spectrometry (CuPy-GC-MS) were used to characterize the macromolecular organic content of suspended particles in surface waters, at intermediate water depths, and in the surface sediments of the Lena...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.586.5158 2023-05-15T15:08:34+02:00 Molecular characterization of suspended and sedimentary organic matter in an Arctic delta S. Peum M-a. Sicre A. Saliot J. W. De Leeuw M. Baas The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.5158 http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.5158 http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf text ftciteseerx 2016-01-08T13:17:26Z Curie-point pyrolysis-gas chromatography (CuPy-GC) and Curie-point pyrolysis-gas chromatography-mass spectrometry (CuPy-GC-MS) were used to characterize the macromolecular organic content of suspended particles in surface waters, at intermediate water depths, and in the surface sediments of the Lena delta and the adjacent Laptev Sea, eastern Siberia. The chromatograms of the pyrolysates of the Lena River particles revealed several compound classes of biogenic significance: polysaccharides, phenolic substances, and lipid constituents of higher plants. The pyrolysates of the surface-suspended particles of the Laptev Sea suggested mixed inputs. Some fatty acids, phytadienes, and n-alkylnitriles were assigned to planktonic organisms. Pyrolysis products from terrigenous material encountered in the river were also present. At intermediate water depths, major differences with respect to the surface particles were evident. In all cases we observed a substantial decrease of the precursors of phytadienes and the fatty acids that undergo biotransformation processes. A peculiar pattern of three series of C14, C16, and Cl8 alkanes and alkenes [normal alkane, the alk-I-ene, the (E)-alk-2-ene, and the (Z)-alk-2-ene] was the prominent feature of these pyrolysates. Further investigations of the particle solvent extract and the corresponding residue suggested that these alkenes, as well as the fatty acids, derived from wax esters. The composition of the sedimentary material in the Laptev Text Arctic laptev Laptev Sea lena delta lena river Siberia Unknown Arctic Curie Point ENVELOPE(-63.483,-63.483,-64.833,-64.833) Laptev Sea |
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ftciteseerx |
language |
English |
description |
Curie-point pyrolysis-gas chromatography (CuPy-GC) and Curie-point pyrolysis-gas chromatography-mass spectrometry (CuPy-GC-MS) were used to characterize the macromolecular organic content of suspended particles in surface waters, at intermediate water depths, and in the surface sediments of the Lena delta and the adjacent Laptev Sea, eastern Siberia. The chromatograms of the pyrolysates of the Lena River particles revealed several compound classes of biogenic significance: polysaccharides, phenolic substances, and lipid constituents of higher plants. The pyrolysates of the surface-suspended particles of the Laptev Sea suggested mixed inputs. Some fatty acids, phytadienes, and n-alkylnitriles were assigned to planktonic organisms. Pyrolysis products from terrigenous material encountered in the river were also present. At intermediate water depths, major differences with respect to the surface particles were evident. In all cases we observed a substantial decrease of the precursors of phytadienes and the fatty acids that undergo biotransformation processes. A peculiar pattern of three series of C14, C16, and Cl8 alkanes and alkenes [normal alkane, the alk-I-ene, the (E)-alk-2-ene, and the (Z)-alk-2-ene] was the prominent feature of these pyrolysates. Further investigations of the particle solvent extract and the corresponding residue suggested that these alkenes, as well as the fatty acids, derived from wax esters. The composition of the sedimentary material in the Laptev |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
S. Peum M-a. Sicre A. Saliot J. W. De Leeuw M. Baas |
spellingShingle |
S. Peum M-a. Sicre A. Saliot J. W. De Leeuw M. Baas Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
author_facet |
S. Peum M-a. Sicre A. Saliot J. W. De Leeuw M. Baas |
author_sort |
S. Peum |
title |
Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
title_short |
Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
title_full |
Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
title_fullStr |
Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
title_full_unstemmed |
Molecular characterization of suspended and sedimentary organic matter in an Arctic delta |
title_sort |
molecular characterization of suspended and sedimentary organic matter in an arctic delta |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.5158 http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf |
long_lat |
ENVELOPE(-63.483,-63.483,-64.833,-64.833) |
geographic |
Arctic Curie Point Laptev Sea |
geographic_facet |
Arctic Curie Point Laptev Sea |
genre |
Arctic laptev Laptev Sea lena delta lena river Siberia |
genre_facet |
Arctic laptev Laptev Sea lena delta lena river Siberia |
op_source |
http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.5158 http://www.aslo.org/lo/toc/vol_41/issue_3/0488.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766339908189814784 |