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Direct Radiocarbon Analysis of Carbonates using a novel combination of Laser-Ablation with Accelerator Mass Spectrometry

English title Direct Radiocarbon Analysis of Carbonates using a novel combination of Laser-Ablation with Accelerator Mass Spectrometry
Applicant Christl Marcus
Number 160064
Funding scheme Project funding (Div. I-III)
Research institution Labor für Ionenstrahlphysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Other disciplines of Physics
Start/End 01.10.2015 - 30.09.2019
Approved amount 286'353.00
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All Disciplines (5)

Discipline
Other disciplines of Physics
Geochronology
Hydrology, Limnology, Glaciology
Inorganic Chemistry
Oceanography

Keywords (6)

Climate Archives ; Laser Ablation; Accelerator Mass Spectrometry; Radiocarbon; Carbonates; Gas Ion Source

Lay Summary (German)

Lead
Laser Ablation (LA) ist ein Probenahmeverfahren bei dem geringe Mengen des Materials einer Oberfläche mittels gepulster Laserstrahlung abgetragen werden. Das abgetragene Material kann zur hochempfindlichen Spurenstoff- und/oder Isotopenanalyse mittels Massenspektrometrie (MS) verwendet werden. Die Kombination von LA mit MS erlaubt somit eine sehr schnelle und gleichzeitig räumlich hochaufgelöste Spurenstoff- und/oder Isotopenanalyse einer Oberfläche, da die zeitaufwendige Probennahme und die chemische Aufbereitung entfallen. Bestimmte Isotope, wie zum Beispiel das Kohlenstoffisotop C-14 (Radiokohlenstoff), können jedoch nicht mit konventioneller MS analysiert werden. Hierzu sind sogenannte Beschleuniger-Massenspektrometer (AMS) notwendig. Zwei Forschergruppen der ETH Zürich ist es nun erstmals gelungen ein LA-System direkt mit einem AMS zu koppeln (LA-AMS) und damit hochaufgelöste Radiokohlenstoffanalysen an Karbonaten durchzuführen.
Lay summary

Ziel des Projektes ist es die an der ETH Zürich neu entwickelte Methode der LA-AMS zu optimieren und für die räumlich hochaufgelöste Analyse von Radiokohlenstoff in natürlich vorkommenden Karbonaten zu verwenden. Natürlich wachsende Karbonate wie z.B. Stalagmiten, Korallen, Muscheln oder Austern werden häufig als Umwelt- und Klimaarchive verwendet, da sie sequentiell wachsen. Jahr für Jahr bilden sie eine neue Wachstumslage und zeichnen damit indirekt die Umweltbedingungen ihrer Umgebung auf (wie z.B.: Temperatur, Salzgehalt oder Niederschlagsmengen). Die hohe räumliche Auflösung der neuen LA-AMS Methode erlaubt somit eine zeitlich hoch aufgelöste Rekonstruktion des Radiokohlenstoffgehaltes im jeweiligen Karbonat-Archiv. Dies wiederum ermöglicht neue Einblicke in den marinen und terrestrischen Kohlenstoffkreislauf und in die Dynamik und die Verbreitung von anthropogenen Kohlenstoff im Ozean. Weiterhin soll das Potential der neuen LA-AMS Methode für die Analyse von Radiokohlenstoff in organischen Material untersucht werden.

Direct link to Lay Summary Last update: 31.03.2015

Responsible applicant and co-applicants

Employees

Name Institute

Publications

Publication
Laser ablation–accelerator mass spectrometry reveals complete bomb 14C signal in an otolith with confirmation of 60-year longevity for red snapper (Lutjanus campechanus)
Andrews Allen H., Yeman Christiane, Welte Caroline, Hattendorf Bodo, Wacker Lukas, Christl Marcus (2019), Laser ablation–accelerator mass spectrometry reveals complete bomb 14C signal in an otolith with confirmation of 60-year longevity for red snapper (Lutjanus campechanus), in Marine and Freshwater Research, 70(12), 1768-1768.
Optimizing the analyte introduction for 14 C laser ablation-AMS
Welte Caroline, Wacker Lukas, Hattendorf Bodo, Christl Marcus, Koch Joachim, Yeman Christiane, Breitenbach Sebastian F. M., Synal Hans-Arno, Günther Detlef (2017), Optimizing the analyte introduction for 14 C laser ablation-AMS, in Journal of Analytical Atomic Spectrometry, 32(9), 1813-1819.
Laser Ablation – Accelerator Mass Spectrometry: An Approach for Rapid Radiocarbon Analyses of Carbonate Archives at High Spatial Resolution
Welte Caroline, Wacker Lukas, Hattendorf Bodo, Christl Marcus, Fohlmeister Jens, Breitenbach Sebastian F. M., Robinson Laura F., Andrews Allen H., Freiwald André, Farmer Jesse R., Yeman Christiane, Synal Hans-Arno, Günther Detlef (2016), Laser Ablation – Accelerator Mass Spectrometry: An Approach for Rapid Radiocarbon Analyses of Carbonate Archives at High Spatial Resolution, in Analytical Chemistry, 88(17), 8570-8576.
Novel Laser Ablation Sampling Device for the Rapid Radiocarbon Analysis of Carbonate Samples by Accelerator Mass Spectrometry
Welte C, Wacker L, Hattendorf B, Christl M, Koch J, Synal H-A, Günther D (2016), Novel Laser Ablation Sampling Device for the Rapid Radiocarbon Analysis of Carbonate Samples by Accelerator Mass Spectrometry, in Radiocarbon, 58(2), 419-435.
UNRAVELLING QUASI-CONTINUOUS 14C PROFILES BY LASER ABLATION AMS
Yeman Christiane, Christl Marcus, Hattendorf Bodo, Wacker Lukas, Welte Caroline, Brehm Nicolas, Synal Hans-Arno, UNRAVELLING QUASI-CONTINUOUS 14C PROFILES BY LASER ABLATION AMS, in Radiocarbon.

Collaboration

Group / person Country
Types of collaboration
Universität Heidelberg, Umweltphysik Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
PIK, Potsdam Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
NIOZ Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
ETH Zürich, Geologie Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Universität Innsbruck, Geologie Austria (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
National Oceanic and Atmospheric Administration United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Goldschmidt Conference Poster Constraining the U-236 input function from nuclear reprocessing using sea shells. 18.08.2019 Barcelona, Spain Christl Marcus; Yeman Christiane; Wacker Lukas;
International Sclerochronology Conference Talk given at a conference Cerastoderma edule as a new proxy of historical liquid releases from European nuclear reprocessing plants 16.06.2019 Split, Croatia Wacker Lukas; Yeman Christiane; Christl Marcus;
5th International Sclerochronology Conference Poster Reconstruction of bomb 14C in the North Sea derived from Arctic Islandic using Laser Ablation AMS 16.06.2019 Split, Croatia Hattendorf Bodo; Wacker Lukas; Yeman Christiane; Christl Marcus;
23rd International Radiocarbon Conference Poster Radiocarbon and stable isotope systematics in a high alpine cave system 20.06.2018 Trondheim, Norway Christl Marcus; Hattendorf Bodo; Wacker Lukas; Yeman Christiane;
EGU General Assembly 2018 Poster RADIOCARBON AND STABLE ISOTOPE SYSTEMATICS IN A HIGH ALPINE CAVE SYSTEM 12.04.2018 Wien, Austria Christl Marcus; Hattendorf Bodo; Wacker Lukas;
EGU General Assembly 2018 Talk given at a conference Online radiocarbon analysis of carbonates with laser ablation AMS 09.04.2018 Wien, Austria Yeman Christiane; Christl Marcus; Hattendorf Bodo; Wacker Lukas;
DPG Frühjahrstagung Erlangen Talk given at a conference A Gas Ion Source and its extension by Laser Ablation for Online Radiocarbon Analysis 08.03.2018 Erlangen, Germany Wacker Lukas; Christl Marcus; Yeman Christiane; Hattendorf Bodo;
VERA Seminar Individual talk Laser Ablation Interface coupled to AMS for online 14C analysis of carbonates 30.11.2017 Wien, Austria Yeman Christiane; Günther Detlef; Wacker Lukas; Hattendorf Bodo; Christl Marcus;
1st Bern Workshop on 14C analyses with MICADAS Talk given at a conference Laser Ablation Interface coupled to AMS for online 14C analysis of carbonates 13.09.2017 Bern, Switzerland Wacker Lukas; Christl Marcus; Hattendorf Bodo; Yeman Christiane; Günther Detlef;
14th AMS Conference Talk given at a conference Can red snapper live for half a century? 18.08.2017 Ottawa, Canada Yeman Christiane; Christl Marcus; Hattendorf Bodo; Wacker Lukas;
14th AMS Conference Talk given at a conference Laser ablation interface coupled to AMS for 14C online analysis of carbonates 16.08.2017 Ottawa, Canada Wacker Lukas; Günther Detlef; Yeman Christiane; Christl Marcus; Hattendorf Bodo;
14th AMS Conference Talk given at a conference Data reduction of quasi-continuous 14C profiles of carbonates by Laser Ablation AMS 13.08.2017 Ottawa, Canada Christl Marcus; Hattendorf Bodo; Yeman Christiane; Günther Detlef; Wacker Lukas;
2nd International Radiocarbon in the Environment Conference Talk given at a conference Laser Ablation AMS for online 14C analysis of marine carbonates 03.07.2017 Debrecen, Hungary Günther Detlef; Wacker Lukas; Hattendorf Bodo; Yeman Christiane; Christl Marcus;
DPG Frühjahrstagung-Mainz Talk given at a conference Improvements of the Laser Ablation Interface for Direct 14C- AMS analysis of carbonates 08.03.2017 Mainz, Germany Hattendorf Bodo; Günther Detlef; Wacker Lukas; Yeman Christiane; Christl Marcus;
ECAART 12 Conference Talk given at a conference Laser Ablation-AMS: rapid and spatially resolved radiocarbon analysis of carbonate records 04.07.2016 Jyväskylä, Finland Wacker Lukas; Hattendorf Bodo; Günther Detlef; Christl Marcus; Yeman Christiane;
4th International Sclerochronology Conference Poster Continuous 14C analysis of marine carbonates by laser ablation coupled with AMS 07.06.2016 Portland, United States of America Wacker Lukas; Hattendorf Bodo; Christl Marcus; Yeman Christiane;
22nd International Radiocarbon Conference Talk given at a conference Rapid High Resolution 14C-Analysis of Carbonate Records by Laser Ablation - AMS 30.11.2015 Dakar, Senegal Christl Marcus; Wacker Lukas; Hattendorf Bodo; Günther Detlef;


Knowledge transfer events



Self-organised

Title Date Place
Vorlesung und Führung für Geochronologiestudenten der Uni Zürich 17.10.2018 Zürich, Switzerland
Führung und Laborbesichtigung Vereinigung des Kaders der Bundesangestellten Sektion Zürich 14.06.2018 Zürich, Switzerland
Labortour für Geologiestudenten ETH Zürich 25.10.2016 Zürich, Switzerland
Vorlesung und Besichtigung der Labore, Geographie Studenten Uni Zürich 24.11.2015 Zürich, Switzerland
Lecture and lab tour, Geology students ETH Zürich 03.11.2015 Zürich, Switzerland

Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Laborführung für Schüler des Gymnasiums Chur German-speaking Switzerland 2018
Talks/events/exhibitions Tag des Kulturerbes, Führungen für die Öffentlichkeit German-speaking Switzerland 2018
Talks/events/exhibitions Schülervorlesung und Führung durch die Beschleunigeranlagen German-speaking Switzerland 2017
Talks/events/exhibitions Laborführung im Rahmen der Sekundarlehrerausbildung German-speaking Switzerland 2016

Awards

Title Year
Best Student presentation, AMS conference, Ottawa, Canada 2017
Best poster award, 4th International Sclerochronology Conference, Portland, USA 2016

Abstract

Only recently, laser ablation (LA) has been applied for the first time for gaseous CO2 sample introduction into a negative gas ion source (GIS) of an accelerator mass spectrometer (AMS) in order to facilitate rapid and spatially resolved radiocarbon analyses. The novel sample introduction system (LA-AMS) has been developed by two ETH Zurich research groups and merges the very high spatial resolution of LA with the enormous sensitivity of AMS. It therefore allows efficient and precise radiocarbon measurements of natural samples at unprecedented spatial resolution. The direct coupling of the LA with AMS additionally offers a vastly reduced sample preparation and significantly higher sample throughput. The main goal of this proposal is to further optimize and apply the newly developed LA system for highly resolved in-situ AMS measurements of C-14 in carbonates. The new LA-AMS system will be implemented in the routine setup for AMS of C-14 and its unique capabilities will be exploited in selected applications that demand for highest spatial resolution.
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