Radiocarbon: Volume 12 - Issue 2

University of Texas at Austin Radiocarbon Dates VIII
S. Valastro, Jr., E. Mott Davis
Published online by Cambridge University Press:

18 July 2016, pp. 617-639
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This list reports C14 measurements made in projects completed in the year ending October, 1969, and some measurements for projects still in progress. Age calculations are based on C14 half-life of 5568 years and a modern standard of 95% of NBS oxalic acid. Deviations reported are based on counting statistics of sample, background, and modern, and are ± 1σ except that when sample count approaches either modern or background, 2σ limits are reported. The laboratory uses liquid scintillation counting of benzene, with Li2C2 and vanadium activated catalyst in preparation. Chemical yields average 88%.

University of Wisconsin Radiocarbon Dates VIII
Margaret M. Bender, Reid A. Bryson, David A. Baerreis
Published online by Cambridge University Press:

18 July 2016, pp. 640-643
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Radiocarbon dates obtained since August 1969 are included in this report. The procedures followed and equipment used have been described previously (Radiocarbon, 1966, v. 8, p. 522-533).

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