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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year

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Volume 88, Issue 8 (Aug 2000)


Trace detection of 41Ca in nuclear reactor concrete by diode-laser-based resonance ionization mass spectrometry

P. Müller / K. Blaum / B.A. Bushaw / S. Diel / Ch. Geppert / A. Nähler / W. Nörtershäuser / N. Trautmann / K. Wendt
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.2000.88.8.487

The content of the long-lived isotope 41Ca in concrete samples obtained from the biological shield of a shut-down nuclear research reactor has been determined by diode-laser-based resonance ionization mass spectrometry (RIMS). Standard procedures were applied for the chemical separation of calcium. A radioactive tracer of 47Ca was used to determine the chemical yield. The total calcium concentration in the final nitric acid solution was measured by x-ray fluorescence (XRF) spectroscopy. The RIMS measurement yielded the abundance of 41Ca relative to the total calcium content with a detection limit of 5×10-10, limited by background effects at mass 41. The detection limit corresponds to a minimum detectable specific 41Ca activity of ~100 mBq/g in the concrete. Reproducibility and accuracy were determined with 41Ca spikes and found to be in the range of 15%, limited predominantly by ion counting statistics.

About the article

Published Online: 2009-09-25

Published in Print: 2000-08-01

Citation Information: Radiochimica Acta, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2000.88.8.487. Export Citation

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