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Automatic AMS Sample Combustion and CO2 Collection

Published online by Cambridge University Press:  18 July 2016

A T Aerts-Bijma ,
J van der Plicht  and
H A J Meijer
A T Aerts-Bijma
Affiliation:
Center for Isotope Research, Groningen University, Groningen, the Netherlands
J van der Plicht*
Affiliation:
Center for Isotope Research, Groningen University, Groningen, the Netherlands
H A J Meijer
Affiliation:
Center for Isotope Research, Groningen University, Groningen, the Netherlands
*
Corresponding author email: plicht@phys.rug.nl.
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Abstract

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In Groningen, all organic samples for accelerator mass spectrometry (AMS) are combusted in an automatic Elemental Analyzer, coupled to an Isotope Ratio Mass Spectrometer and Cryogenic Trapping System. The Gas Chromatographic (GC) column, part of the Elemental Analyzer system, appeared to be the main cause for memory effects. Therefore we modified the Elemental Analyzer, such that the trapped CO2 no longer passed the GC column. Our system modification reduced the memory effect significantly, as shown by lower radiocarbon concentration values for anthracite backgrounds, and a much smaller spread in these values. Our modified system can perform up to 40 combustions unattended in about 6 hr.

Type
I. Becoming Better
Information
Radiocarbon , Volume 43 , Issue 2A: Proceedings of the 17th International Radiocarbon Conference (Part 1 of 3) , 2001 , pp. 293 - 298
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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