International Journal for chemical aspects of nuclear science and technology
Ed. by Qaim, Syed M.
12 Issues per year
IMPACT FACTOR increased in 2015: 1.100
5-year IMPACT FACTOR: 1.229
Rank 15 out of 32 in category Nuclear Science & Technology in the 2015 Thomson Reuters Journal Citation Report/Science Edition
SCImago Journal Rank (SJR) 2015: 0.470
Source Normalized Impact per Paper (SNIP) 2015: 0.708
Impact per Publication (IPP) 2015: 1.048
Trace detection of 41Ca in nuclear reactor concrete by diode-laser-based resonance ionization mass spectrometry
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.
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