Determination of vanadium in titanate-based ferroelectrics by INAA with discriminating gamma-ray spectrometry
Journal of Radioanalytical and Nuclear Chemistry(2016)
摘要
Instrumental neutron activation analysis was used for determination of vanadium mass fraction in crystals of incipient ferroelectric strontium titanate and ferroelectric barium titanate. In order to improve vanadium limit of detection, discriminating gamma-ray spectrometry was used by inserting an absorption filter between the samples and an HPGe detector. The use of the absorption lead filter 6-mm thick yielded improvement of the vanadium limit of detection by a factor of two. The vanadium mass fraction determined in a quality control sample, which was NIST standard reference material SRM 1648 Urban Particulate Matter, was in close agreement with the certified value.
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关键词
Titanate-based ferroelectrics, Vanadium, INAA, Discriminating gamma-ray spectrometry
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