Bv. Lvov et al., IMPROVED ALGORITHM FOR LINEARIZATION OF CALIBRATION CURVES IN ZEEMAN GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY, Spectrochimica acta, Part B: Atomic spectroscopy, 51(6), 1996, pp. 609-618
A two-parameter model for simulation of concentration curves in Zeeman
graphite furnace atomic absorption spectrometry is proposed. The algo
rithm based on this model can be used for linearization of calibration
curves up to the rollover point. The merits of the algorithm are supp
orted by experimental data obtained for 20 elements under different me
asurement conditions (light source current and slit width), including
the cases where the curvature of the initial calibration curves origin
ates partially from mass-dependent chemical effects and/or non-uniform
atom distribution over the furnace cross section. The linearization e
rror does not exceed the random scatter for replicates.