Precision and linearity of determinations at high concentrations in atomic-absorption spectrometry with horizontal rotation of the burner.
The variation in precision of analytical measurements and linearity of analytical calibration curves resulting from a reduction of flame path-length by rotation of the burner head in flame atomic-absorption spectrometry is described. The precision is found to be approximately equivalent to that with the normal burner slot alignment, and the linear range is found to be improved in some cases. The application of burner rotation to determination of zinc in Standard Reference Material 1648-Urban Particulate Matter, is shown to provide precision and accuracy typical of flame atomic-absorption analysis.
Epstein
M S
MS
Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
Winefordner
J D
JD