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Instrumentation for simultaneous multielement atomic absorption spectrometry with graphite furnace atomization.

J M Harnly1

  • 1Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Composition Laboratory, US Department of Agriculture, Building 161, BARC-East, 20705, Beltsville, MD, USA.

Analytical and Bioanalytical Chemistry
|June 1, 1996
PubMed
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A new multielement graphite furnace-atomic absorption spectrometry (GF-AAS) instrument using a continuum source could determine 30-40 elements simultaneously. This approach offers comparable performance to ICP-MS with reduced complexity.

Area of Science:

  • Analytical Chemistry
  • Spectroscopy

Background:

  • Graphite furnace-atomic absorption spectrometry (GF-AAS) is typically limited to simultaneous determination of 4-6 elements.
  • Hollow cathode lamps impose limitations on the number of elements that can be analyzed concurrently.

Purpose of the Study:

  • To explore the feasibility of a multielement GF-AAS instrument with enhanced element determination capabilities.
  • To leverage advancements in continuum source instrumentation, spectrometers, and detectors for multielement analysis.

Main Methods:

  • Utilizing a continuum source in conjunction with GF-AAS.
  • Implementing advanced spectrometer and detector technologies.
  • Employing wavelength and time integrated absorbance measurements.

Main Results:

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  • Potential for simultaneous determination of 30-40 elements.
  • Achieving detection limits comparable to line source AAS, with possible improvements.
  • Extended calibration ranges and high-resolution spectral inspection capabilities.

Conclusions:

  • A multielement GF-AAS instrument using a continuum source is feasible.
  • This approach offers multielement versatility comparable to atomic emission spectrometry.
  • The proposed instrument could rival ICP-MS performance with less complexity.