Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia
The dataset comprises alkanoic acids composition data that was obtained on sediment samples from sub-Antarctic South Georgia. The sediments were collected from a range of different sites, including lakes, peat deposits, a marine inlet and a fjord during RV Polarstern expedition PS81 in 2013. Prior t...
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Format: | Dataset |
Language: | English |
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PANGAEA
2024
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.967441 https://doi.org/10.1594/PANGAEA.967441 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.967441 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
alkanoic acids ANT-XXIX/4 Area/locality Calculation according to Marzi et al. (1993) Calculation according to Poynter & Eglinton (1990) Carbon Preference Index n-Alkanoic acids Co1305 Co1306 Co1308 Cruise/expedition DATE/TIME Depth bathymetric bottom/max sediment/rock top/min Docosanoic acid of total fatty acids Dotriacontanoic acid of total fatty acids DW-SG_062 DW-SG_063 DW-SG_064 ELEVATION Event label Fjord Gas chromatography - Flame Ionization Detection (GC-FID) GC Gravity corer Heneicosanoic acid of total fatty acids Hentriacontanoic acid of total fatty acids Heptacosanoic acid of total fatty acids Heptadecanoic acid of total fatty acids Hexacosanoic acid of total fatty acids Hexadecanoic acid of total fatty acids Icosanoic acid of total fatty acids lake LATITUDE LONGITUDE n-Alkanoic acid average chain length Nonacosanoic acid of total fatty acids Nonadecanoic acid of total fatty acids Octacosanoic acid of total fatty acids Octadecanoic acid of total fatty acids PCUWI peat Pentacosanoic acid of total fatty acids |
spellingShingle |
alkanoic acids ANT-XXIX/4 Area/locality Calculation according to Marzi et al. (1993) Calculation according to Poynter & Eglinton (1990) Carbon Preference Index n-Alkanoic acids Co1305 Co1306 Co1308 Cruise/expedition DATE/TIME Depth bathymetric bottom/max sediment/rock top/min Docosanoic acid of total fatty acids Dotriacontanoic acid of total fatty acids DW-SG_062 DW-SG_063 DW-SG_064 ELEVATION Event label Fjord Gas chromatography - Flame Ionization Detection (GC-FID) GC Gravity corer Heneicosanoic acid of total fatty acids Hentriacontanoic acid of total fatty acids Heptacosanoic acid of total fatty acids Heptadecanoic acid of total fatty acids Hexacosanoic acid of total fatty acids Hexadecanoic acid of total fatty acids Icosanoic acid of total fatty acids lake LATITUDE LONGITUDE n-Alkanoic acid average chain length Nonacosanoic acid of total fatty acids Nonadecanoic acid of total fatty acids Octacosanoic acid of total fatty acids Octadecanoic acid of total fatty acids PCUWI peat Pentacosanoic acid of total fatty acids Berg, Sonja Kusch, Stephanie Jivcov, Sandra Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
topic_facet |
alkanoic acids ANT-XXIX/4 Area/locality Calculation according to Marzi et al. (1993) Calculation according to Poynter & Eglinton (1990) Carbon Preference Index n-Alkanoic acids Co1305 Co1306 Co1308 Cruise/expedition DATE/TIME Depth bathymetric bottom/max sediment/rock top/min Docosanoic acid of total fatty acids Dotriacontanoic acid of total fatty acids DW-SG_062 DW-SG_063 DW-SG_064 ELEVATION Event label Fjord Gas chromatography - Flame Ionization Detection (GC-FID) GC Gravity corer Heneicosanoic acid of total fatty acids Hentriacontanoic acid of total fatty acids Heptacosanoic acid of total fatty acids Heptadecanoic acid of total fatty acids Hexacosanoic acid of total fatty acids Hexadecanoic acid of total fatty acids Icosanoic acid of total fatty acids lake LATITUDE LONGITUDE n-Alkanoic acid average chain length Nonacosanoic acid of total fatty acids Nonadecanoic acid of total fatty acids Octacosanoic acid of total fatty acids Octadecanoic acid of total fatty acids PCUWI peat Pentacosanoic acid of total fatty acids |
description |
The dataset comprises alkanoic acids composition data that was obtained on sediment samples from sub-Antarctic South Georgia. The sediments were collected from a range of different sites, including lakes, peat deposits, a marine inlet and a fjord during RV Polarstern expedition PS81 in 2013. Prior to the geochemical analyses reported here, the sediments were freeze-dried and ground. More details on the study sites, sampling and data evaluation can be found in Berg et al. (submitted manuscript). Alkyl lipid biomarkers were extracted by accelerated solvent extraction (ASE 300, Thermo, USA) with dichloromethane and methanol (DCM, MeOH; 9:1, v/v at 120°C, 75 bar) (cores Co1305, PS81/283, and Co1308) or via consecutive ultrasonication in DCM:Hexan (1:1), MeOH:DCM (1:1) and MeOH (core Co1306 and the peat and soil samples). The total lipid extract (TLE) was saponified with 0.5 M KOH in MeOH and water (9:1, v/v) at 80°C for 2 h. Neutral lipids (NL) were extracted from the TLE with dichloromethane by liquid-liquid phase separation. To purify alkanoic acids, the remaining TLE was acidified to pH 1 and acids were extracted from the TLE with dichloromethane by liquid-liquid phase separation. Prior to analysis by gas chromatography (GC, Agilent 7890B, Agilent Technologies, USA) equipped with a flame ionization detector (FID), alkanoic acids were converted to methyl ester derivatives. Alkanoic acids were identified and quantified against authentic external standards. Concentrations are given as fractional abundances for the compound class. |
format |
Dataset |
author |
Berg, Sonja Kusch, Stephanie Jivcov, Sandra |
author_facet |
Berg, Sonja Kusch, Stephanie Jivcov, Sandra |
author_sort |
Berg, Sonja |
title |
Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
title_short |
Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
title_full |
Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
title_fullStr |
Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
title_full_unstemmed |
Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia |
title_sort |
alkanoic acid composition of marine and terrestrial sedimentary archives from sub-antarctic south georgia |
publisher |
PANGAEA |
publishDate |
2024 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.967441 https://doi.org/10.1594/PANGAEA.967441 |
op_coverage |
MEDIAN LATITUDE: -54.194631 * MEDIAN LONGITUDE: -36.572256 * SOUTH-BOUND LATITUDE: -54.215333 * WEST-BOUND LONGITUDE: -36.592600 * NORTH-BOUND LATITUDE: -54.187100 * EAST-BOUND LONGITUDE: -36.538000 * DATE/TIME START: 2013-04-01T00:00:00 * DATE/TIME END: 2013-04-11T00:00:00 * MINIMUM ELEVATION: -198.1 m * MAXIMUM ELEVATION: 76.0 m |
long_lat |
ENVELOPE(-36.592600,-36.538000,-54.187100,-54.215333) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://doi.org/10.1594/PANGAEA.967394 Berg, Sonja; et al. (accepted): Alkyl lipid distributions and compound-specific 14C isotope compositions in diverse sedimentary archives in sub-Antarctic South Georgia: Deconvolving (past and present) marine and terrestrial sources and revealing localized export dynamics in response to environmental change. https://doi.pangaea.de/10.1594/PANGAEA.967441 https://doi.org/10.1594/PANGAEA.967441 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.96744110.1594/PANGAEA.967394 |
_version_ |
1810288951465869312 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.967441 2024-09-15T17:48:04+00:00 Alkanoic acid composition of marine and terrestrial sedimentary archives from sub-Antarctic South Georgia Berg, Sonja Kusch, Stephanie Jivcov, Sandra MEDIAN LATITUDE: -54.194631 * MEDIAN LONGITUDE: -36.572256 * SOUTH-BOUND LATITUDE: -54.215333 * WEST-BOUND LONGITUDE: -36.592600 * NORTH-BOUND LATITUDE: -54.187100 * EAST-BOUND LONGITUDE: -36.538000 * DATE/TIME START: 2013-04-01T00:00:00 * DATE/TIME END: 2013-04-11T00:00:00 * MINIMUM ELEVATION: -198.1 m * MAXIMUM ELEVATION: 76.0 m 2024 text/tab-separated-values, 2927 data points https://doi.pangaea.de/10.1594/PANGAEA.967441 https://doi.org/10.1594/PANGAEA.967441 en eng PANGAEA https://doi.org/10.1594/PANGAEA.967394 Berg, Sonja; et al. (accepted): Alkyl lipid distributions and compound-specific 14C isotope compositions in diverse sedimentary archives in sub-Antarctic South Georgia: Deconvolving (past and present) marine and terrestrial sources and revealing localized export dynamics in response to environmental change. https://doi.pangaea.de/10.1594/PANGAEA.967441 https://doi.org/10.1594/PANGAEA.967441 CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess alkanoic acids ANT-XXIX/4 Area/locality Calculation according to Marzi et al. (1993) Calculation according to Poynter & Eglinton (1990) Carbon Preference Index n-Alkanoic acids Co1305 Co1306 Co1308 Cruise/expedition DATE/TIME Depth bathymetric bottom/max sediment/rock top/min Docosanoic acid of total fatty acids Dotriacontanoic acid of total fatty acids DW-SG_062 DW-SG_063 DW-SG_064 ELEVATION Event label Fjord Gas chromatography - Flame Ionization Detection (GC-FID) GC Gravity corer Heneicosanoic acid of total fatty acids Hentriacontanoic acid of total fatty acids Heptacosanoic acid of total fatty acids Heptadecanoic acid of total fatty acids Hexacosanoic acid of total fatty acids Hexadecanoic acid of total fatty acids Icosanoic acid of total fatty acids lake LATITUDE LONGITUDE n-Alkanoic acid average chain length Nonacosanoic acid of total fatty acids Nonadecanoic acid of total fatty acids Octacosanoic acid of total fatty acids Octadecanoic acid of total fatty acids PCUWI peat Pentacosanoic acid of total fatty acids dataset 2024 ftpangaea https://doi.org/10.1594/PANGAEA.96744110.1594/PANGAEA.967394 2024-07-30T23:42:28Z The dataset comprises alkanoic acids composition data that was obtained on sediment samples from sub-Antarctic South Georgia. The sediments were collected from a range of different sites, including lakes, peat deposits, a marine inlet and a fjord during RV Polarstern expedition PS81 in 2013. Prior to the geochemical analyses reported here, the sediments were freeze-dried and ground. More details on the study sites, sampling and data evaluation can be found in Berg et al. (submitted manuscript). Alkyl lipid biomarkers were extracted by accelerated solvent extraction (ASE 300, Thermo, USA) with dichloromethane and methanol (DCM, MeOH; 9:1, v/v at 120°C, 75 bar) (cores Co1305, PS81/283, and Co1308) or via consecutive ultrasonication in DCM:Hexan (1:1), MeOH:DCM (1:1) and MeOH (core Co1306 and the peat and soil samples). The total lipid extract (TLE) was saponified with 0.5 M KOH in MeOH and water (9:1, v/v) at 80°C for 2 h. Neutral lipids (NL) were extracted from the TLE with dichloromethane by liquid-liquid phase separation. To purify alkanoic acids, the remaining TLE was acidified to pH 1 and acids were extracted from the TLE with dichloromethane by liquid-liquid phase separation. Prior to analysis by gas chromatography (GC, Agilent 7890B, Agilent Technologies, USA) equipped with a flame ionization detector (FID), alkanoic acids were converted to methyl ester derivatives. Alkanoic acids were identified and quantified against authentic external standards. Concentrations are given as fractional abundances for the compound class. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-36.592600,-36.538000,-54.187100,-54.215333) |