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Flow Injection Analysis Techniques Of Method Development For Flame Atomic Absorption Spectrometry, Julian Tyson, C. E. Adeeyinwo, J. M. H. Appleton, S. R. Bysouth, A. B. Idris, L. L. Sarkissian
Flow Injection Analysis Techniques Of Method Development For Flame Atomic Absorption Spectrometry, Julian Tyson, C. E. Adeeyinwo, J. M. H. Appleton, S. R. Bysouth, A. B. Idris, L. L. Sarkissian
Chemistry Department Faculty Publication Series
The flow injection introduction of samples that would be difficult by conventional nebulisation owing to dissolved solid content, viscosity or quenching effects on flame reactions is demonstrated. The various ways of achieving sample dilution by control of volume injected, tube dimensions and flow-rate are discussed and a manifold described for producing solutions for calibration purposes and diluting off-range samples. The important characteristics of the nebuliser and instrument for flow injection work are evaluated. A simple manifold for investigating interference effects is described and its use illustrated for some well known effects. The possibilities of achieving pre-treatment by solvent extraction and …
Determination Of Chromium In Steel By Flame Atomic Absorption Spectrometry Using A Flow Injection Standard Additions Method, Julian Tyson, A. B. Idris
Determination Of Chromium In Steel By Flame Atomic Absorption Spectrometry Using A Flow Injection Standard Additions Method, Julian Tyson, A. B. Idris
Chemistry Department Faculty Publication Series
The determination of chromium in steel by atomic-absorption spectrometry is briefly reviewed and the basis of the flow injection standard additions method explained, in which the novel configuration of using the sample as the carrier stream is employed. The effects of iron, fuel to oxidant ratio and dissolution procedure were investigated and a procedure is described that allows a conventional instrument-optimising strategy to be used, requires no releasing agents and uses pure chromium standard solutions. The selection of appropriate flow injection conditions is discussed in the light of the single well stirred mixing chamber model for dispersion. The application of …
A Critical Look At Calibration Procedures For Flame Atomic-Absorption Spectrometry, Julian Tyson
A Critical Look At Calibration Procedures For Flame Atomic-Absorption Spectrometry, Julian Tyson
Chemistry Department Faculty Publication Series
The present treatment of calibration procedures in the analytical literature is described and the reasons for the poor coverage are discussed. The computational bases of a number of currently available atomic-absorption instrument calibration computer programs are described and discussed. Two computer-based methods are compared using the same calibration data. Additional features of these programs are also discussed. Some desirable features of such programs are proposed. The use of the standard additions method is examined in terms of the shape of the plot of absorbance versus concentration of interferent. The success of the method depends on using only the plateau region …
Flow Injection Sample Introduction For Atomic-Absorption Spectrometry: Applications Of A Simplified Model For Dispersion, Julian Tyson, A. B. Idris
Flow Injection Sample Introduction For Atomic-Absorption Spectrometry: Applications Of A Simplified Model For Dispersion, Julian Tyson, A. B. Idris
Chemistry Department Faculty Publication Series
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