Skip to main content
Article
Study of the Possible Benefits of Flow Injection Sample Introduction for Flame Atomic Absorption Spectrometry
Journal of Analytical Atomic Spectrometry (1989)
  • Julian Tyson
  • Christina E. Adeeyinwo
  • Stephen Bysouth
Abstract
Flow injection techniques for use with atomic spectrometry are briefly reviewed, from which it is apparent
that there has been a considerable increase in interest recently in on-line pre-concentration and matrix
isolation methods. In addition to the use of immobilised reagents and solvent extraction, methods based on
precipitation and collection of the precipitate in the manifold have been reported. The possible benefits of
running the nebuliser under starvation conditions both with and without air compensation are examined
together with the benefits of peak-area as opposed to peak-height measurements, claimed in some previous
studies to lead to improved detection limits. It is shown that with a Baird Atomic A3400 nebuliser the
depressive effect of phosphate on calcium may be removed at low flow-rates and that with a Philips SP9
nebuliser the best detection limits are obtained when strategies for maximising the peak height are adopted.
Preliminary results for the generation of a volatile metal chelate (copper trifluoroacetylacetonate) as the basis
for matrix isolation show a considerable improvement in peak-area sensitivity over conventional
nebulisation, although the peak-heig ht sensitivity is similar.
Keywords
  • Flow injection,
  • flame atomic absorption spectrometry,
  • on-line pre-concentration,
  • matrix removal,
  • detection limits
Publication Date
1989
Citation Information
Julian Tyson, Christina E. Adeeyinwo and Stephen Bysouth. "Study of the Possible Benefits of Flow Injection Sample Introduction for Flame Atomic Absorption Spectrometry" Journal of Analytical Atomic Spectrometry Vol. 4 (1989) p. 191
Available at: http://works.bepress.com/julian_tyson/164/