Application of standardless analysis in graphite furnace atomic absorption spectrometry: determination of chromium.
Influences of atomization temperatures on the characteristic mass and the atomic absorption coefficient of chromium were studied. The experimental results show that the values of characteristic mass have appeared to be stable to better than 10% when the analyte is atomized in the range of 2500-2800 degrees. The standardless analysis was applied to the determination of chromium in standard sediment and geochemical reference samples and satisfactory results were obtained.
Zheng
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Department of Chemistry, Jilin University, Changchun 130023, P.R. China.
Su
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