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A Preliminary Determination of the Absolute 14C/12C Ratio of OX-I

  • M L Roberts (a1) and J R Southon (a2)

Abstract

A preliminary determination of the absolute 14C/12C ratio of the oxalic acid I standard (NBS SRM 4990B) has been made. Using an accelerator mass spectrometry (AMS) system, a known number of radiocarbon ions were implanted in a thin copper foil. The foil was then combusted with the addition of 14C-free carrier material. This resulting gas (which had a known 14C/12C ratio) was graphitized and compared to OX-I material. This comparison yielded an absolute 14C/12C ratio of OX-I. The absolute 14C/12C ratio of OX-I, coupled with knowledge of the specific activity of OX-1, provides an alternative determination of the 14C half-life.

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Copyright

Corresponding author

Corresponding author. Email: mroberts@whoi.edu

References

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A Preliminary Determination of the Absolute 14C/12C Ratio of OX-I

  • M L Roberts (a1) and J R Southon (a2)

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