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A Gravimetric Approach to the Standard Addition Method in Instrumental Analysis 1

Published

Author(s)

William R. Kelly, Bruce S. MacDonald, William F. Guthrie

Abstract

A general mathematical formulation for the method of standard additions is presented that has universal applicability. It is based on gravimetry rather than volumetry which reduces the preparation time, gives greater flexibility to design because one is not limited to discrete volumes, and makes possible increased accuracy. Standard additions has heretofore been applied to analytes in aqueous solutions that are aspirated into flames or plasmas and determined by absorption, emission, or mass spectrometric techniques. The formulation presented here demonstrates that the method can be applied to complex matrices, such as distillate and residual fuel oils, using techniques such as XRF of combustion combined with atomic fluorescence or absorption. These techniques which can be subject to matrix-induced interferences could realize the same benefits that have been demonstrated for dilute aqueous solutions.
Citation
Journal of Atomic and Analytical Spectroscopy (JAAS)

Keywords

gravimetry, interferences, matrix, Standard Addition, unlimited

Citation

Kelly, W. , MacDonald, B. and Guthrie, W. (2008), A Gravimetric Approach to the Standard Addition Method in Instrumental Analysis 1, Journal of Atomic and Analytical Spectroscopy (JAAS) (Accessed April 23, 2024)
Created October 16, 2008