A new approach to process planktonic foraminifera for radiocarbon measurements
Trabajo presentado a la II International Conference on Radioecological Concentration Processes (50 years later), celebrada en Sevilla (España) del 6 al 9 de noviembre de 2016. Carbonate shells from foraminifera are often analyzed for radiocarbon to determine the age of deep-sea sediments or to asses...
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ftcsic:oai:digital.csic.es:10261/158671 2024-02-11T10:08:05+01:00 A new approach to process planktonic foraminifera for radiocarbon measurements Guerra, Roberta Santos, F. J. García-Tenorio, R. European Science Foundation European Commission 2016 http://hdl.handle.net/10261/158671 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100000782 unknown #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/215458 Publisher's version Sí II International Conference on Radioecological Concentration Processes (2016) http://hdl.handle.net/10261/158671 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100000782 open comunicación de congreso http://purl.org/coar/resource_type/c_5794 2016 ftcsic https://doi.org/10.13039/50110000078010.13039/501100000782 2024-01-16T10:27:21Z Trabajo presentado a la II International Conference on Radioecological Concentration Processes (50 years later), celebrada en Sevilla (España) del 6 al 9 de noviembre de 2016. Carbonate shells from foraminifera are often analyzed for radiocarbon to determine the age of deep-sea sediments or to assess radiocarbon reservoir ages. The Centro Nacional de Aceleradores (CNA) is equipped for the AMS radiocarbon analysis with a MICADAS (MIni CArbon DAting System), and a sample processing line including vial flushing, carbonate dissolution and transfer of the evolved CO2 from the septum sealed tubes to the automated graphitization equipment (AGE). In this work, we have tested a fullyautomated setup from sampling the released CO2 from small carbonate samples (i.e. foraminifera shells) for radiocarbon analysis, where the formed CO2 is later flushed by helium flow by means of a double-wall needle mounted from the tubes to the zeolite trap of the existing AGE-2. This carbonate dissociation line essentially replaces the elemental analyser normally used for the combustion of organic samples to further reduce the effort involved for sample preparation. The automated method yields in low sample blanks of about 50,000 years. Results of the processed reference materials (IAEA-C1 and IAEA-C2) are in agreement with their consensus values. Using this automated dissociation line we were able to date samples of monospecific foraminifera shells (~10 mg) of ~ 1000 radiocarbon years. This project was supported by the European Science Foundation (ESF) Exchange Visit Grant 5103 ‘Dating and TIming of fluxes into and out of the MarinE CArbon Reservoir of the MeDiterranean Sea (TIMECARD)’ awarded within the Research Networking Programme Earthtime – The European Contribution (EARTHTIME-EU). Peer Reviewed Conference Object Planktonic foraminifera Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
unknown |
description |
Trabajo presentado a la II International Conference on Radioecological Concentration Processes (50 years later), celebrada en Sevilla (España) del 6 al 9 de noviembre de 2016. Carbonate shells from foraminifera are often analyzed for radiocarbon to determine the age of deep-sea sediments or to assess radiocarbon reservoir ages. The Centro Nacional de Aceleradores (CNA) is equipped for the AMS radiocarbon analysis with a MICADAS (MIni CArbon DAting System), and a sample processing line including vial flushing, carbonate dissolution and transfer of the evolved CO2 from the septum sealed tubes to the automated graphitization equipment (AGE). In this work, we have tested a fullyautomated setup from sampling the released CO2 from small carbonate samples (i.e. foraminifera shells) for radiocarbon analysis, where the formed CO2 is later flushed by helium flow by means of a double-wall needle mounted from the tubes to the zeolite trap of the existing AGE-2. This carbonate dissociation line essentially replaces the elemental analyser normally used for the combustion of organic samples to further reduce the effort involved for sample preparation. The automated method yields in low sample blanks of about 50,000 years. Results of the processed reference materials (IAEA-C1 and IAEA-C2) are in agreement with their consensus values. Using this automated dissociation line we were able to date samples of monospecific foraminifera shells (~10 mg) of ~ 1000 radiocarbon years. This project was supported by the European Science Foundation (ESF) Exchange Visit Grant 5103 ‘Dating and TIming of fluxes into and out of the MarinE CArbon Reservoir of the MeDiterranean Sea (TIMECARD)’ awarded within the Research Networking Programme Earthtime – The European Contribution (EARTHTIME-EU). Peer Reviewed |
author2 |
European Science Foundation European Commission |
format |
Conference Object |
author |
Guerra, Roberta Santos, F. J. García-Tenorio, R. |
spellingShingle |
Guerra, Roberta Santos, F. J. García-Tenorio, R. A new approach to process planktonic foraminifera for radiocarbon measurements |
author_facet |
Guerra, Roberta Santos, F. J. García-Tenorio, R. |
author_sort |
Guerra, Roberta |
title |
A new approach to process planktonic foraminifera for radiocarbon measurements |
title_short |
A new approach to process planktonic foraminifera for radiocarbon measurements |
title_full |
A new approach to process planktonic foraminifera for radiocarbon measurements |
title_fullStr |
A new approach to process planktonic foraminifera for radiocarbon measurements |
title_full_unstemmed |
A new approach to process planktonic foraminifera for radiocarbon measurements |
title_sort |
new approach to process planktonic foraminifera for radiocarbon measurements |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/158671 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100000782 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/215458 Publisher's version Sí II International Conference on Radioecological Concentration Processes (2016) http://hdl.handle.net/10261/158671 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100000782 |
op_rights |
open |
op_doi |
https://doi.org/10.13039/50110000078010.13039/501100000782 |
_version_ |
1790607039351750656 |