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14C BLANK CORRECTIONS FOR 25–100 μG SAMPLES AT THE NATIONAL OCEAN SCIENCES AMS LABORATORY

  • M L Roberts (a1), K L Elder (a1), W J Jenkins (a1), A R Gagnon (a1), L Xu (a1), J D Hlavenka (a1) and B E Longworth (a1)...

Abstract

Replicate radiocarbon (14C) measurements of organic and inorganic control samples, with known Fraction Modern values in the range Fm = 0–1.5 and mass range 6 μg–2 mg carbon, are used to determine both the mass and radiocarbon content of the blank carbon introduced during sample processing and measurement in our laboratory. These data are used to model, separately for organic and inorganic samples, the blank contribution and subsequently “blank correct” measured unknowns in the mass range 25–100 μg. Data, formulas, and an assessment of the precision and accuracy of the blank correction are presented.

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Copyright

This is a work of the U.S. Government and is not subject to copyright protection in the United States.

Corresponding author

*Corresponding author. Email: mroberts@whoi.edu.

Footnotes

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Selected Papers from the 23rd International Radiocarbon Conference, Trondheim, Norway, 17–22 June, 2018

Footnotes

References

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