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  • Title: Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier.
    Author: Castro MA, Robles LC, Lumbreras JM, de Celis B, Aller AJ, Littlejohn D.
    Journal: Anal Chim Acta; 2009 Mar 23; 636(2):158-62. PubMed ID: 19264163.
    Abstract:
    Electrothermal atomization of beryllium from graphite and tungsten surfaces was compared with and without the use of various chemical modifiers. Tungsten proved to be the best substrate, giving the more sensitive integrated atomic absorption signals of beryllium. Tungsten platform atomization with zirconium as a chemical modifier was used for the determination of beryllium in several NIST SRM certified reference samples, with good agreement obtained between the results found and the certified values. The precision of the measurements (at 10 microgL(-1)), the limit of detection (3sigma), and the characteristic mass of beryllium were 2.50%, 0.009 microgL(-1) and 0.42 pg, respectively.
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