Isotope-Ratio and Background Corrections for Accelerator Mass Spectrometry Radiocarbon Measurements
نویسندگان
چکیده
منابع مشابه
Isotope Ratio Mass Spectrometry.
Isotope Ratio Mass Spectrometry (IRMS) is a specialized technique used to provide information about the geographic, chemical, and biological origins of substances. The ability to determine the source of an organic substance stems from the relative isotopic abundances of the elements which comprise the material. Because the isotope ratios of elements such as carbon, hydrogen, oxygen, sulfur, and...
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RECEIVED for review February 21, 1978. Accepted June 19, 1978. NMR spectra since two distinct peaks (6 -3.38, 3.78 ppm) caused by these protons are observed in CDCA vs. only one peak (6 -3.45 ppm) caused by the same protons in UDCA. T h e fingerprint region of the spectrum (6 1-2.5 ppm) and the relative position of the CIS methyl peak with respect to tha t of the doublet caused by the Cpl methy...
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ژورنال
عنوان ژورنال: Radiocarbon
سال: 1990
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s0033822200040121