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The DOI matches its Crossref record; 21 of the 21 references it cites were found in a registry or an index.

Modifying a sealed tube zinc reduction method for preparation of AMS graphite targets: Reducing background and attaining high precision

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Xu, Xiaomei, Trumbore, Susan E., Zheng, Shuhui, Southon, John R., McDuffee, Kelsey E., Luttgen, Madelyn, Liu, Julia C.·2007·Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Abstract

Abstract The sealed tube zinc reduction method for converting CO2 to graphite for AMS 14C measurements was originally developed for rapid production of graphite in biomedical tracer experiments. The method was usually thought to have low precision and a high background. We have modified the zinc reduction method originally outlined in Vogel [J.S. Vogel, Radiocarbon 34 (3) (1992) 344] by carefully controlling the amounts of reagents (zinc, titanium hydride and Co or Fe catalyst) and now routinely obtain a precision of 2–3‰ and a relatively low background of ∼50,000 14C years when analyzing for 14C at the Keck Carbon Cycle AMS facility at UC Irvine. Fractionation of carbon isotopes does occur during graphitization and depends on the graphitization yield, which can be affected by the amounts of reagents used and other conditions. The δ13C of our zinc-reduced graphite is usually lighter by 2–3‰ than the CO2 from which it is made, but this is corrected for in our system by simultaneous measurement of 13C/12C along with 14C/12C by the spectrometer. This method is suitable for 14C enriched samples, as well as natural abundance 14C samples, especially those with modern 14C contents. With improved precision and background, we believe that many disciplines can benefit from this technique because of its low cost and rapid production of graphite.

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Metadata

Authors
Xu, X., Trumbore, S. E., Zheng, S., Southon, J. R., McDuffee, K. E., Luttgen, M., & Liu, J. C.
Venue
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publisher
Elsevier BV
Published
2007-06
Volume
259
Issue
1
Pages
320-329
ISSN
0168-583X (ISSN-L)
OpenAlex
W2046968287
Cited by
428
References
21
FWCI
11.96
Type
journal article
Language
en
Open access
green

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Xu, X., Trumbore, S. E., Zheng, S., Southon, J. R., McDuffee, K. E., Luttgen, M., & Liu, J. C. (2007). Modifying a sealed tube zinc reduction method for preparation of AMS graphite targets: Reducing background and attaining high precision. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. https://doi.org/10.1016/j.nimb.2007.01.175

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