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Matrix corrections in trace-element analysis by X-ray fluorescence: An extension of the Compton scattering technique to long wavelengths

Matrix corrections in trace-element analysis by X-ray fluorescence: An extension of the Compton scattering technique to long wavelengths
Matrix corrections in trace-element analysis by X-ray fluorescence: An extension of the Compton scattering technique to long wavelengths
Mass absorption coefficients (A2) for a series of standard rocks, have been calculated in the wavelength region 0.492–3.03 View the MathML source. Plots of these data against the intensity of the Compton scattered peak [(I) Compton] give an excellent correlation for the wavelengths 0.429 View the MathML source to the Fe-absorption edge (1.74 View the MathML source); the data confirm the observations of Reynolds. Hence, routine measurement of one peak will give the mass absorption coefficient of a sample in an analytically important region (Sn/1bK? to Ni/1bK?). A2 has also been directly measured on three of the samples and systematic differences between calculated and measured are attributed to the measuring technique. At wavelengths longer than the Fe-absorption edge, (up to 3.03 View the MathML source) A2 can be estimated using a combination of (I) Compton and Fe/1bK? c.p.s. This technique enables meaningful matrix corrections to be carried out on the elements Co, Mn, Cr, V, Ti, Sc (K spectra) and Ba (L spectra). Cr and Ba results are presented for some standard rocks.
0009-2541
203-213
Nesbitt, R.W.
6a124ad1-4e6d-4407-b92f-592f7fd682e4
Mastins, H.
a2ba080c-dee8-4b4b-9b63-46f35fa21256
Stolz, G.W.
735eaf0b-d1d6-48e9-907b-471f1ea0f97f
Bruce, D.R.
5b5f169c-b56c-40ad-9eb4-148d6d0e166b
Nesbitt, R.W.
6a124ad1-4e6d-4407-b92f-592f7fd682e4
Mastins, H.
a2ba080c-dee8-4b4b-9b63-46f35fa21256
Stolz, G.W.
735eaf0b-d1d6-48e9-907b-471f1ea0f97f
Bruce, D.R.
5b5f169c-b56c-40ad-9eb4-148d6d0e166b

Nesbitt, R.W., Mastins, H., Stolz, G.W. and Bruce, D.R. (1976) Matrix corrections in trace-element analysis by X-ray fluorescence: An extension of the Compton scattering technique to long wavelengths. Chemical Geology, 18 (3), 203-213. (doi:10.1016/0009-2541(76)90004-8).

Record type: Article

Abstract

Mass absorption coefficients (A2) for a series of standard rocks, have been calculated in the wavelength region 0.492–3.03 View the MathML source. Plots of these data against the intensity of the Compton scattered peak [(I) Compton] give an excellent correlation for the wavelengths 0.429 View the MathML source to the Fe-absorption edge (1.74 View the MathML source); the data confirm the observations of Reynolds. Hence, routine measurement of one peak will give the mass absorption coefficient of a sample in an analytically important region (Sn/1bK? to Ni/1bK?). A2 has also been directly measured on three of the samples and systematic differences between calculated and measured are attributed to the measuring technique. At wavelengths longer than the Fe-absorption edge, (up to 3.03 View the MathML source) A2 can be estimated using a combination of (I) Compton and Fe/1bK? c.p.s. This technique enables meaningful matrix corrections to be carried out on the elements Co, Mn, Cr, V, Ti, Sc (K spectra) and Ba (L spectra). Cr and Ba results are presented for some standard rocks.

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Published date: October 1976
Organisations: Geochemistry

Identifiers

Local EPrints ID: 361863
URI: https://eprints.soton.ac.uk/id/eprint/361863
ISSN: 0009-2541
PURE UUID: d6079250-aae3-47e6-8cd2-b32262028115

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Date deposited: 04 Feb 2014 16:16
Last modified: 18 Jul 2017 02:57

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Contributors

Author: R.W. Nesbitt
Author: H. Mastins
Author: G.W. Stolz
Author: D.R. Bruce

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