14C Blank Corrections for 25–100 μg Samples at the National Ocean Sciences AMS Laboratory

Title14C Blank Corrections for 25–100 μg Samples at the National Ocean Sciences AMS Laboratory
Publication TypeJournal Article
Year of Publication2019
AuthorsRoberts, ML, Elder, KL, Jenkins, WJ, Gagnon, AR, Xu, L, Hlavenka, JD, Longworth, BE
JournalRadiocarbon
Volume61
Issue5
Pagination1403 - 1411
Date Published10/2019
ISBN Number0033-8222, 1945-5755
KeywordsAMS, AMS dating, blank corrections
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.

URLhttps://www.cambridge.org/core/journals/radiocarbon/article/14c-blank-corrections-for-25100-g-samples-at-the-national-ocean-sciences-ams-laboratory/494B9CF72445198570213B4A2CC303D0
DOI10.1017/RDC.2019.74