IP25 in marine sediments, supplementary material
We describe the results of an inter-laboratory investigation into the identification and quantification of the Arctic sea ice biomarker proxy IP25 in marine sediments. 7 laboratories took part in the study, which consisted of the analysis of IP25 in a series of sediment samples from different region...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.823363 2024-09-15T17:48:07+00:00 IP25 in marine sediments, supplementary material Belt, Simon T Brown, Thomas A Ampel, Linda Cabedo-Sanz, Patricia Fahl, Kirsten Kocis, James J Massé, Guillaume Navarro-Rodriguez, Alba Ruan, Jiaping Xu, Yunping LATITUDE: 81.187400 * LONGITUDE: 12.984900 * DATE/TIME START: 2004-09-04T13:21:00 * DATE/TIME END: 2004-09-04T13:21:00 2014 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.823363 https://doi.org/10.1594/PANGAEA.823363 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.823363 https://doi.org/10.1594/PANGAEA.823363 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Belt, Simon T; Brown, Thomas A; Ampel, Linda; Cabedo-Sanz, Patricia; Fahl, Kirsten; Kocis, James J; Massé, Guillaume; Navarro-Rodriguez, Alba; Ruan, Jiaping; Xu, Yunping (2014): An inter-laboratory investigation of the Arctic sea ice biomarker proxy IP25 in marine sediments: key outcomes and recommendations. Climate of the Past, 10(1), 155-166, https://doi.org/10.5194/cp-10-155-2014 dataset publication series 2014 ftpangaea https://doi.org/10.1594/PANGAEA.82336310.5194/cp-10-155-2014 2024-07-24T02:31:21Z We describe the results of an inter-laboratory investigation into the identification and quantification of the Arctic sea ice biomarker proxy IP25 in marine sediments. 7 laboratories took part in the study, which consisted of the analysis of IP25 in a series of sediment samples from different regions of the Arctic, sub-Arctic and Antarctic, additional sediment extracts and purified standards. The results obtained allowed 4 key outcomes to be determined. First, IP25 was identified by all laboratories in sediments from the Canadian Arctic with inter-laboratory variation in IP25 concentration being substantially larger than within individual laboratories. This greater variation between laboratories was attributed to the difficulty in accurately determining instrumental response factors for IP25, despite provision of appropriate standards. Second, the identification of IP25 by 3 laboratories in sediment from SW Iceland that was believed to represent a blank, was interpreted as representing a better limit of detection or quantification for such laboratories, contamination or mis-identification. These alternatives could not be distinguished conclusively with the data available, although it is noted that the precision of these data was significantly poorer compared with the other IP25 concentration measurements. Third, 3 laboratories reported the occurrence of IP25 in a sediment sample from the Antarctic Peninsula even though this biomarker is believed to be absent from the Southern Ocean. This anomaly is attributed to a combined chromatographic and mass spectrometric interference that results from the presence of a di-unsaturated highly branched isoprenoid (HBI) pseudo-homologue of IP25 that occurs in Antarctic sediments. Finally, data are presented that suggest that extraction of IP25 is consistent between Automated Solvent Extraction (ASE) and sonication methods and that IP25 concentrations based on 7-hexylnonadecane as an internal standard are comparable using these methods. Recoveries of some more unsaturated HBIs ... Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Arctic Iceland Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(12.984900,12.984900,81.187400,81.187400) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
We describe the results of an inter-laboratory investigation into the identification and quantification of the Arctic sea ice biomarker proxy IP25 in marine sediments. 7 laboratories took part in the study, which consisted of the analysis of IP25 in a series of sediment samples from different regions of the Arctic, sub-Arctic and Antarctic, additional sediment extracts and purified standards. The results obtained allowed 4 key outcomes to be determined. First, IP25 was identified by all laboratories in sediments from the Canadian Arctic with inter-laboratory variation in IP25 concentration being substantially larger than within individual laboratories. This greater variation between laboratories was attributed to the difficulty in accurately determining instrumental response factors for IP25, despite provision of appropriate standards. Second, the identification of IP25 by 3 laboratories in sediment from SW Iceland that was believed to represent a blank, was interpreted as representing a better limit of detection or quantification for such laboratories, contamination or mis-identification. These alternatives could not be distinguished conclusively with the data available, although it is noted that the precision of these data was significantly poorer compared with the other IP25 concentration measurements. Third, 3 laboratories reported the occurrence of IP25 in a sediment sample from the Antarctic Peninsula even though this biomarker is believed to be absent from the Southern Ocean. This anomaly is attributed to a combined chromatographic and mass spectrometric interference that results from the presence of a di-unsaturated highly branched isoprenoid (HBI) pseudo-homologue of IP25 that occurs in Antarctic sediments. Finally, data are presented that suggest that extraction of IP25 is consistent between Automated Solvent Extraction (ASE) and sonication methods and that IP25 concentrations based on 7-hexylnonadecane as an internal standard are comparable using these methods. Recoveries of some more unsaturated HBIs ... |
format |
Other/Unknown Material |
author |
Belt, Simon T Brown, Thomas A Ampel, Linda Cabedo-Sanz, Patricia Fahl, Kirsten Kocis, James J Massé, Guillaume Navarro-Rodriguez, Alba Ruan, Jiaping Xu, Yunping |
spellingShingle |
Belt, Simon T Brown, Thomas A Ampel, Linda Cabedo-Sanz, Patricia Fahl, Kirsten Kocis, James J Massé, Guillaume Navarro-Rodriguez, Alba Ruan, Jiaping Xu, Yunping IP25 in marine sediments, supplementary material |
author_facet |
Belt, Simon T Brown, Thomas A Ampel, Linda Cabedo-Sanz, Patricia Fahl, Kirsten Kocis, James J Massé, Guillaume Navarro-Rodriguez, Alba Ruan, Jiaping Xu, Yunping |
author_sort |
Belt, Simon T |
title |
IP25 in marine sediments, supplementary material |
title_short |
IP25 in marine sediments, supplementary material |
title_full |
IP25 in marine sediments, supplementary material |
title_fullStr |
IP25 in marine sediments, supplementary material |
title_full_unstemmed |
IP25 in marine sediments, supplementary material |
title_sort |
ip25 in marine sediments, supplementary material |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.823363 https://doi.org/10.1594/PANGAEA.823363 |
op_coverage |
LATITUDE: 81.187400 * LONGITUDE: 12.984900 * DATE/TIME START: 2004-09-04T13:21:00 * DATE/TIME END: 2004-09-04T13:21:00 |
long_lat |
ENVELOPE(12.984900,12.984900,81.187400,81.187400) |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Iceland Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Iceland Sea ice Southern Ocean |
op_source |
Supplement to: Belt, Simon T; Brown, Thomas A; Ampel, Linda; Cabedo-Sanz, Patricia; Fahl, Kirsten; Kocis, James J; Massé, Guillaume; Navarro-Rodriguez, Alba; Ruan, Jiaping; Xu, Yunping (2014): An inter-laboratory investigation of the Arctic sea ice biomarker proxy IP25 in marine sediments: key outcomes and recommendations. Climate of the Past, 10(1), 155-166, https://doi.org/10.5194/cp-10-155-2014 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.823363 https://doi.org/10.1594/PANGAEA.823363 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.82336310.5194/cp-10-155-2014 |
_version_ |
1810289182418927616 |