Universität zu Köln

Rethemeyer, J., Gierga, M., Heinze, S., Stolz, A., Wotte, A., Wischhoefer, P., Berg, S., Melchert, J. O. and Dewald, A. (2019). CURRENT SAMPLE PREPARATION AND ANALYTICAL CAPABILITIES OF THE RADIOCARBON LABORATORY AT COLOGNEAMS. Radiocarbon, 61 (5). S. 1449 - 1461. TUCSON: UNIV ARIZONA DEPT GEOSCIENCES. ISSN 1945-5755

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Abstract

This work summarizes the methodical capabilities, improvements, and new developments in the radiocarbon laboratory of the accelerator mass spectrometry (AMS) facility at the University of Cologne, Germany, which was established in 2010. During the past years, the laboratory has specialized in the analysis of small and gaseous samples. We thus, recently installed a second ion source dedicated for radiocarbon (C-14) analysis of CO2 samples at our 6 MV Tandetron AMS from High Voltage Engineering Europe B.V. that is coupled with the gas injection system from Ionplus and an EuroVector EA 3000 elemental analyzer. This work summarizes all pretreatment methods and analytical facilities established in our laboratory during the last years including C-14 analysis of individual organic compounds and of CO(2)( )trapped on molecular sieves. We also report different blank values including our long-term blank since 2011, which is for normal-sized, solid samples (650-1000 mu g C) 0.0012 +/- 0.0004 F C-14 (54,305 +/- 2581 yr BP, n = 484). The precision obtained for modern samples measured as graphite is 0.5% and for gaseous samples injected with the GIS <= 2%.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rethemeyer, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gierga, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heinze, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stolz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wotte, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wischhoefer, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Berg, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Melchert, J. O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dewald, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-131700
DOI:	10.1017/RDC.2019.16
Journal or Publication Title:	Radiocarbon
Volume:	61
Number:	5
Page Range:	S. 1449 - 1461
Date:	2019
Publisher:	UNIV ARIZONA DEPT GEOSCIENCES
Place of Publication:	TUCSON
ISSN:	1945-5755
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CARBON; INDICATORS Multiple languages Geochemistry & Geophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13170