Measurement of Small Volume Oceanic 14C Samples by Accelerator Mass Spectrometry
نویسندگان
چکیده
منابع مشابه
Measurement of beryllium in biological samples by accelerator mass spectrometry: applications for studying chronic beryllium disease.
A method using accelerator mass spectrometry (AMS) has been developed for quantifying attomoles of beryllium (Be) in biological samples. This method provides the sensitivity to trace Be in biological samples at very low doses with the purpose of identifying the molecular targets involved in chronic beryllium disease. Proof of the method was tested by administering 0.001, 0.05, 0.5, and 5.0 micr...
متن کاملMeasurement of Radioactive Caesium Isotopes by Accelerator Mass Spectrometry
The first measurements of the radioactive Cs and Cs isotopes were made on an accelerator mass spectrometer. The natural Ba interference was suppressed using an isobar separator for anions (ISA) in order to measure the less abundant isobaric Cs and Cs isotopes. It was found that the Ba interference could be suppressed by a factor of 2×10 while 25% of Cs was transmitted. Furthermore, through comp...
متن کاملCorrection for Carkeet et al., Human vitamin B12 absorption measurement by accelerator mass spectrometry using specifically labeled 14C-cobalamin.
There is a need for an improved test of human ability to assimilate dietary vitamin B(12). Assaying and understanding absorption and uptake of B(12) is important because defects can lead to hematological and neurological complications. Accelerator mass spectrometry is uniquely suited for assessing absorption and kinetics of carbon-14 ((14)C)-labeled substances after oral ingestion because it is...
متن کاملMeasurement of Ultra-Low Potassium Contaminations with Accelerator Mass Spectrometry
Levels of trace radiopurity in active detector materials is a subject of major concern in low-background experiments. Among the radio-isotopes, K is one of the most abundant and yet whose signatures are difficult to reject. Procedures were devised to measure trace potassium concentrations in the inorganic salt CsI as well as in organic liquid scintillator (LS) with Accelerator Mass Spectrometry...
متن کاملQuality of Graphite Target for Biological/Biomedical/Environmental Applications of 14C-Accelerator Mass Spectrometry
Catalytic graphitization for (14)C-accelerator mass spectrometry ((14)C-AMS) produced various forms of elemental carbon. Our high-throughput Zn reduction method (C/Fe = 1:5, 500 degrees C, 3 h) produced the AMS target of graphite-coated iron powder (GCIP), a mix of nongraphitic carbon and Fe(3)C. Crystallinity of the AMS targets of GCIP (nongraphitic carbon) was increased to turbostratic carbon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Radiocarbon
سال: 1987
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s0033822200043757