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ATOMIC ABSORPTION SPECTROSCOPY

 

Perkin Elmer 1100 B spectrometer
Flame-AAS (air/C2H2 and N2O / C2H2)

 Perkin Elmer Zeeman 5100 spectrometer

 Flame AAS (air/C2H2 and N2O / C2H2)
 Graphite furnace (GFAAS) with L’Vov Platform with Zeeman correction
 Hydride system

Atomic absorption spectrophotometry allows the quantitative determination of the elemental concentration in solutions and solid matrices after decomposition of the sample.  A solution is introduced in an atomization device (flame, graphite furnace or hydride system).  Atoms in the ground state absorb light at a selected wavelength emitted by a hollow cathode lamp of the element of interest.  The wavelength is a qualitative (element specific) parameter.  The absorbed light is a measure for the concentration of the analyte in solution after calibration with standard solutions in the ppm-ppb range.

Applications

  • Mono-element method for the quantitative determination of elemental concentrations in water, metals, alloys, polymers, coatings, rubbers, after complete dissolution/decomposition in suitable acids (e.g. microwave dissolution).
  • Determination of toxic elements (e.g. Cr, As, Pb, Cd, …) in materials.
  • Determination of the degree of siliconization on pharmaceutical rubbers using MiBK extraction solutions.
  • Migration studies for pharmaceutical rubbers and packaging materials.