AN UPDATE ON THE PERFORMANCE OF THE IN SITU 14 C EXTRACTION LINE AT THE UNIVERSITY OF BERN

Sliz, M U; Espic, C; Hofmann, B A; Leya, I; Szidat, S (2020). AN UPDATE ON THE PERFORMANCE OF THE IN SITU 14 C EXTRACTION LINE AT THE UNIVERSITY OF BERN. Radiocarbon, 62(5), pp. 1371-1388. Arizona Board of Regents, University of Arizona 10.1017/RDC.2020.38

[img] Text
an_update_on_the_performance_of_the_in_situ_14c_extraction_line_at_the_university_of_bern.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (305kB) | Request a copy
[img] Text
Sliz et al. Radiocarbon.pdf - Accepted Version
Restricted to registered users only until 1 December 2020.
Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND).

Download (14MB) | Request a copy

We present the current performance of the in situ radiocarbon (14C) extraction line at the University ofBern with an improved extraction and combustion system. After three major steps of improvement, the extraction ofsample CO2gas now takes place inside a platinum crucible, supported by an outer quartz-glass crucible. This setupallows us to operate the line as a closed system for several samples without breaking the vacuum. Measurements ofprocedural blanks and samples from our reference strewn field, Jiddat al Harasis 073, performed in our system all showa good reproducibility and, for the strewn field samples, consistency with published data. We describe eachimprovement step in detail, discussing the advantages and disadvantages of all tested setups. By sharing ourknowledge, we aim to inform and prevent others from making the same or similar detours in establishing14Cextraction systems for extraterrestrial samples.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute

UniBE Contributor:

Sliz, Malgorzata Urszula; Espic, Christophe; Leya, Ingo and Szidat, Sönke

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science > 520 Astronomy
600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

0033-8222

Publisher:

Arizona Board of Regents, University of Arizona

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

12 Jun 2020 17:39

Last Modified:

15 Nov 2020 02:41

Publisher DOI:

10.1017/RDC.2020.38

BORIS DOI:

10.7892/boris.144380

URI:

https://boris.unibe.ch/id/eprint/144380

Actions (login required)

Edit item Edit item
Provide Feedback