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Effects of X-ray absorption in the analysis of thick target samples by XRF

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Abstract

The accuracy of the quantitative analysis of thick targets by XRF is impaired by effects due to the absorption of X-rays in the matrix associated with the non-uniformity of the X-ray beam and the lack of knowledge of the actual distribution of trace elements in the target. The uncertainty in the elemental mass associated to a definite number X-rays detected is discussed in the paper. A correction factor is derived to account specifically for the effect of the absorption of X-rays and the non-uniformity of the X-ray beam.

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References

  1. See for instance: Advances in X-Ray Analysis, Volume 19, Kendall/Hunt Publishing Company, 1976; Advances in X-Ray Analysis, Volume 20 Plenum Press, 1977, and Advances in X-Ray Analysis, Volume 21, Plenum Press, 1978.

  2. C. J. SPARKS Jr., Advances in X-Ray Analysis, Volume 19, Plenum Press, 1976, p. 19.

  3. E. C. MONTENEGRO, G. B. BAPTISTA, A. S. PASCHOA, C. V. BARROS LEITE, Nucl. Inst. Meth., 159 (1979) 153.

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  4. E. C. MONTENEGRO, G. B. BAPTISTA, P. W. E. P. DUARTE, Atomic Data and Nuclear Data Tables, 22 (1979) 131.

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Authors and Affiliations

  1. Departamento de Física, Pontifícia Universidade Católica, Cx. P. 38071, 22453, Rio de Janeiro, RJ, Brasil

    G. B. Baptista, E. C. Montenegro, C. V. Barros Leite & A. S. Paschoa

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  1. G. B. Baptista
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  2. E. C. Montenegro
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  3. C. V. Barros Leite
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  4. A. S. Paschoa
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Additional information

Work partially supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico, Financiadora de Estudos e Projetos and International Atomic Energy Agency.

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Baptista, G.B., Montenegro, E.C., Barros Leite, C.V. et al. Effects of X-ray absorption in the analysis of thick target samples by XRF. J. Radioanal. Chem. 60, 227–235 (1980). https://doi.org/10.1007/BF02518298

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  • DOI: https://doi.org/10.1007/BF02518298

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