Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier

M.A. Castro, L.C. Robles, J.M. Lumbreras, B. de Celis, A.J. Aller, D. Littlejohn

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 mu g L-1), the limit of detection (3 sigma), and the characteristic mass of beryllium were 2.50%, 0.009 mu g L-1 and 0.42 pg, respectively.
LanguageEnglish
Pages158-162
Number of pages4
JournalAnalytica Chimica Acta
Volume636
Issue number2
DOIs
Publication statusPublished - 23 Mar 2009

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Beryllium
Atomic absorption spectrometry
Tungsten
beryllium
tungsten
spectrometry
Spectrum Analysis
Atomization
reference sample
Graphite
graphite
Limit of Detection
substrate
Substrates
chemical

Keywords

  • beryllium
  • electrothermal atomic absorption
  • spectrometry
  • chemical modifiers
  • atomizers
  • zirconium modifier
  • tungsten platform atomization
  • graphite platform atomization

Cite this

Castro, M.A. ; Robles, L.C. ; Lumbreras, J.M. ; de Celis, B. ; Aller, A.J. ; Littlejohn, D. / Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier. In: Analytica Chimica Acta. 2009 ; Vol. 636, No. 2. pp. 158-162.
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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 mu g L-1), the limit of detection (3 sigma), and the characteristic mass of beryllium were 2.50{\%}, 0.009 mu g L-1 and 0.42 pg, respectively.",
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Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier. / Castro, M.A.; Robles, L.C.; Lumbreras, J.M.; de Celis, B.; Aller, A.J.; Littlejohn, D.

In: Analytica Chimica Acta, Vol. 636, No. 2, 23.03.2009, p. 158-162.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier

AU - Castro, M.A.

AU - Robles, L.C.

AU - Lumbreras, J.M.

AU - de Celis, B.

AU - Aller, A.J.

AU - Littlejohn, D.

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AB - 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 mu g L-1), the limit of detection (3 sigma), and the characteristic mass of beryllium were 2.50%, 0.009 mu g L-1 and 0.42 pg, respectively.

KW - beryllium

KW - electrothermal atomic absorption

KW - spectrometry

KW - chemical modifiers

KW - atomizers

KW - zirconium modifier

KW - tungsten platform atomization

KW - graphite platform atomization

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