Journal
ANALYTICA CHIMICA ACTA
Volume 588, Issue 2, Pages 166-172Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2007.02.024
Keywords
inductively coupled plasma mass spectrometry (ICP-MS); inductively coupled plasma optical emission spectroscopy (ICP-OES); instrumental neutron activation analysis (INAA); aerosolized ceramic material; radiological dispersal device (RDD)
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In radiological dispersal device (RDD) studies, sintered ceramics made of CeO2 and SrTiO3 were used to simulate actinide oxides and (SrTiO3)-Sr-90, respectively. Instrumental neutron activation analysis (INAA), inductively coupled plasma optical emission spectroscopy (ICP-OES), and inductively coupled plasma mass spectrometry (ICP-MS) were investigated as possible analytical techniques for the measurement of SrTiO3 and CeO2 constituents in powder forms, sintered ceramics, and air particulates collected following a detonation. For ICP-OES and ICP-MS analysis, new digestion procedures were developed using a closed-vessel microwave apparatus. Acid mixtures (HNO3:H2O2:HF (16:2:1) and HNO3:H2O2 (1:4)) were found to be effective for the digestion of SrTiO3 and CeO2 respectively. The intercomparison study confirmed that the results obtained by ICP-OES/MS are in good agreement with INAA results. This also confirms the efficiency of the digestion procedures for these refractory materials and the inter-exchangeability of the instrumentation tested. Comparison between the ICP-OES and the ICP-MS instrumentation for the determination of air particulates shows, that although the two methods are equivalent, ICP-MS provides better detection limits (0.11, 0.02, and 0.04 mu g per filter for Ti, Sr, and Ce, respectively) and the possibility to determine isotopic fractionation as the result of an explosion. Crown Copyright (c) 2007 Published by Elsevier BV All rights reserved.
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