Počet záznamů: 1  

Determination of vanadium in titanate-based ferroelectrics by INAA with discriminating gamma-ray spectrometry

  1. 1.
    0474041 - UJF-V 2018 RIV NL eng J - Článek v odborném periodiku
    Kameník, Jan - Dragounová, K. - Kučera, Jan - Bryknar, Z. - Trepakov, Vladimír - Strunga, Vladimír
    Determination of vanadium in titanate-based ferroelectrics by INAA with discriminating gamma-ray spectrometry.
    Journal of Radioanalytical and Nuclear Chemistry. Roč. 311, č. 2 (2017), s. 1333-1338. ISSN 0236-5731.
    [1st International Conference on Radioanalytical and Nuclear chemistry (RANC). Budapest, 10.04.2016-15.04.2016]
    Grant CEP: GA ČR(CZ) GBP108/12/G108; GA MŠk LM2015056
    Institucionální podpora: RVO:68378271 ; RVO:61389005
    Klíčová slova: Titanate-based ferroelectrics * Vanadium * INAA * discriminating gamma-ray spectrometry
    Kód oboru RIV: CB - Analytická chemie, separace; BM - Fyzika pevných látek a magnetismus (FZU-D)
    Obor OECD: Analytical chemistry; Condensed matter physics (including formerly solid state physics, supercond.) (FZU-D)
    Impakt faktor: 1.181, rok: 2017

    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.
    Trvalý link: http://hdl.handle.net/11104/0271139