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Use of X-ray Scattering in Absorption Corrections for X-ray Fluorescence Analysis of Aerosol Loaded Filters

Published online by Cambridge University Press:  06 March 2019

K. K. Nielson  and
S. R. Garcia
K. K. Nielson
Affiliation:
Battelle Pacific Northwest Laboratories Richland, Washington 99352
S. R. Garcia
Affiliation:
Battelle Pacific Northwest Laboratories Richland, Washington 99352
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Abstract

Two methods are described for computing multielement x-ray absorption corrections for aerosol samples collected in IPC-1478 and Whatman 4l filters. The first relies on scatter peak intensities and scattering cross sections to estimate the mass of light elements (Z < l4) in the sample. This mass is used -with the measured heavy element (Z ≥l4) masses to iteratively compute sample absorption corrections. The second method utilizes a linear function of ln(μ) vs. ln(E) determined from the scatter peak ratios and estimates sample mass from the scatter peak intensities. Both methods assume a homogeneous depth distribution of aerosol in a fraction of the front of the filters, and the assumption is evaluated with respect to an exponential aerosol depth distribution. Penetration depths for various real, synthetic and liquid aerosols were measured.

Type
X-Ray Fluorescence
Information
Advances in X-Ray Analysis , Volume 20: Twenty-Fifth Annual Conference on Applications of X-ray Analysis, August 4-6, 1976 , 1976 , pp. 497 - 506
Copyright
Copyright © International Centre for Diffraction Data 1976

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References

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