Continuous flow analysis of total organic carbon in polar ice cores
Ice cores are a widely used archive to reconstruct past changes of the climate system. This is done by measuring the concentration of substances in the ice and in the air of bubbles enclosed in ice. Some species pertaining to the carbon cycle (e.g., CO2, CH4) are routinely measured. However, informa...
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Online Access: | https://boris.unibe.ch/37309/1/es801244e.pdf https://boris.unibe.ch/37309/ |
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ftunivbern:oai:boris.unibe.ch:37309 2023-08-20T04:00:47+02:00 Continuous flow analysis of total organic carbon in polar ice cores Federer, Urs Kaufmann, Patrik R. Hutterli, Manuel A. Schüpbach, Simon Stocker, Thomas F. 2008 application/pdf https://boris.unibe.ch/37309/1/es801244e.pdf https://boris.unibe.ch/37309/ eng eng ACS Publications https://boris.unibe.ch/37309/ info:eu-repo/semantics/restrictedAccess Federer, Urs; Kaufmann, Patrik R.; Hutterli, Manuel A.; Schüpbach, Simon; Stocker, Thomas F. (2008). Continuous flow analysis of total organic carbon in polar ice cores. Environmental science & technology, 42(21), pp. 8039-8043. Washington, D.C.: ACS Publications 10.1021/es801244e <http://dx.doi.org/10.1021/es801244e> info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2008 ftunivbern https://doi.org/10.1021/es801244e 2023-07-31T20:59:30Z Ice cores are a widely used archive to reconstruct past changes of the climate system. This is done by measuring the concentration of substances in the ice and in the air of bubbles enclosed in ice. Some species pertaining to the carbon cycle (e.g., CO2, CH4) are routinely measured. However, information about the organic fraction of the impurities in polar ice is still very limited. Therefore, we developed a new method to determine the content of total organic carbon (TOC) in ice cores using a continuous flow analysis (CFA) system. The method is based on photochemical oxidation of TOC and the electrolytic quantification of the CO2 produced during oxidation. The TOC instrument features a limit of detection of 2 ppbC and a response time of 60 s at a sample flow rate of 0.7 mL/min and a linear measurement range of 2−4000 ppbC. First measurements on the ice core from Talos Dome, Antarctica, reveal TOC concentrations varying between 80 and 360 ppbC in the 20 m section presented. Article in Journal/Newspaper Antarc* Antarctica ice core BORIS (Bern Open Repository and Information System, University of Bern) Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Environmental Science & Technology 42 21 8039 8043 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
description |
Ice cores are a widely used archive to reconstruct past changes of the climate system. This is done by measuring the concentration of substances in the ice and in the air of bubbles enclosed in ice. Some species pertaining to the carbon cycle (e.g., CO2, CH4) are routinely measured. However, information about the organic fraction of the impurities in polar ice is still very limited. Therefore, we developed a new method to determine the content of total organic carbon (TOC) in ice cores using a continuous flow analysis (CFA) system. The method is based on photochemical oxidation of TOC and the electrolytic quantification of the CO2 produced during oxidation. The TOC instrument features a limit of detection of 2 ppbC and a response time of 60 s at a sample flow rate of 0.7 mL/min and a linear measurement range of 2−4000 ppbC. First measurements on the ice core from Talos Dome, Antarctica, reveal TOC concentrations varying between 80 and 360 ppbC in the 20 m section presented. |
format |
Article in Journal/Newspaper |
author |
Federer, Urs Kaufmann, Patrik R. Hutterli, Manuel A. Schüpbach, Simon Stocker, Thomas F. |
spellingShingle |
Federer, Urs Kaufmann, Patrik R. Hutterli, Manuel A. Schüpbach, Simon Stocker, Thomas F. Continuous flow analysis of total organic carbon in polar ice cores |
author_facet |
Federer, Urs Kaufmann, Patrik R. Hutterli, Manuel A. Schüpbach, Simon Stocker, Thomas F. |
author_sort |
Federer, Urs |
title |
Continuous flow analysis of total organic carbon in polar ice cores |
title_short |
Continuous flow analysis of total organic carbon in polar ice cores |
title_full |
Continuous flow analysis of total organic carbon in polar ice cores |
title_fullStr |
Continuous flow analysis of total organic carbon in polar ice cores |
title_full_unstemmed |
Continuous flow analysis of total organic carbon in polar ice cores |
title_sort |
continuous flow analysis of total organic carbon in polar ice cores |
publisher |
ACS Publications |
publishDate |
2008 |
url |
https://boris.unibe.ch/37309/1/es801244e.pdf https://boris.unibe.ch/37309/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Talos Dome |
geographic_facet |
Talos Dome |
genre |
Antarc* Antarctica ice core |
genre_facet |
Antarc* Antarctica ice core |
op_source |
Federer, Urs; Kaufmann, Patrik R.; Hutterli, Manuel A.; Schüpbach, Simon; Stocker, Thomas F. (2008). Continuous flow analysis of total organic carbon in polar ice cores. Environmental science & technology, 42(21), pp. 8039-8043. Washington, D.C.: ACS Publications 10.1021/es801244e <http://dx.doi.org/10.1021/es801244e> |
op_relation |
https://boris.unibe.ch/37309/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/es801244e |
container_title |
Environmental Science & Technology |
container_volume |
42 |
container_issue |
21 |
container_start_page |
8039 |
op_container_end_page |
8043 |
_version_ |
1774720363709595648 |