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Simultaneous determination of elemental content in water samples by total reflection X-ray fluorescence and atomic absorption spectrometry
Authors:M G Macedo-Miranda  G Zarazua  E Mejía-Zarate  P Avila-Pérez  B Barrientos-Becerra and S Tejeda
Institution:(1) Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Apartado Postal 890, Metepec, México, C.P., 52140, México;(2) Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales, Apartado Postal 18-1027, México D. F., C.P., 11801, México
Abstract:An analytical exercise between two laboratories was performed in order to compare the elemental composition of a water sample. The metal concentration of Cr, Cu, Fe, Mn, Ni, Pb, and Zn in the water sample was analyzed by Total Reflection X-Ray Fluorescence and Atomic Absorption Spectrometry. The analysis by Total Reflection X-Ray Spectrometry was realized by an Ital Structures TX-2000 and the analysis by Atomic Absorption Spectrometry was made by a Perkin Elmer Spectrophotometer Model 3110. Results show a good agreement in the metal concentrations obtained by both techniques. The variation coefficient between the results with both techniques was less than 14%. Therefore, it is possible to conclude that both techniques are reliable and adequate for the determination of these elements in environmental water samples.
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