Abstract
The correction factors obtained via the limit dilution method (LDM) as the operating mode are denned. A simple mathematical model is used to obtain equations for the calculation of the correction coefficients H, M, Y and Y/H from experimental measurements of the sample's fluorescence intensity, measured at two different dilutions. The model can be used to calculate the theoretical fluorescence intensity for any dilution, which, when applied, shows and justifies the decreased matrix effect when dilution is increased; this facilitates the choice of the optimum degree or real dilution for a given matrix error. This paper proposes an algorithm for the calculation of the analyte concentration in samples with a complex matrix. The method is applied to the determination of calcium and iron in silicoaluminates. The results obtained show satisfactory accuracy with a theoretical dilution factor ƒ = 0.05.
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