Optimization of the multiparameter ?-? coincidence spectrometry for the determination of iridium in geological materials

Christian Köberl, Heinz Huber

    Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

    Abstract

    A new 1CS system has recently been constructed at the University of Vienna. Using low-energy planar detectors and improved electronic components, the detection limit could be lowered to about ng/g for carbonate rocks. As standards, either synthetic iridium standards loaded on high-purity quartz powder, or well characterized geological reference materials, were used. In a series of test measurements we attempted to optimize external factors, such as sample size, irradiation time and flux, decay time, and measuring time, and to determine the optimal electronic configuration, including shaping time, coincidence time, range, and gain. Further measurements are geared towards the establishment of a simple and effective routine procedure for a variety of rock types containing iridium at concentrations within the 0.02-1 ppb range.
    OriginalspracheEnglisch
    Seiten (von - bis)655-660
    Seitenumfang6
    FachzeitschriftJournal of Radioanalytical and Nuclear Chemistry
    Jahrgang244
    Ausgabenummer3
    PublikationsstatusVeröffentlicht - 2000

    ÖFOS 2012

    • 1051 Geologie, Mineralogie

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