Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-25T00:55:09.288Z Has data issue: false hasContentIssue false
  • English
  • Français

X-Ray Fluorescence Minor- and Trace-Element Analyses Silicate Rocks in the Presence of Large Interelement Effects

Published online by Cambridge University Press:  06 March 2019

B. S. King ,
L. F. Espos  and
B. P. Fabbi
B. S. King
Affiliation:
U.S. Geological Survey, Menlo Park, CA 94025
L. F. Espos
Affiliation:
U.S. Geological Survey, Menlo Park, CA 94025
B. P. Fabbi
Affiliation:
U.S. Geological Survey, Reston, VA 22092
Get access

Abstract

An X-ray fluorescence (XRF) method has been devised for the rapid quantitative determination of 16 minor and trace elements in geological materials. This method, a modification of a direct dilution method (1, 2, 3), uses a sample-to-binder ratio of 85:15 for sample preparation. Pellets prepared by this method are durable and do not deteriorate rapidly when exposed to high X-ray irradiation. Interferences and matrix effects are successfully corrected in actual analyses by employment of multiple linear regression equations.

Accuracy and precision have been improved over the method previously used in this laboratory. Detection limits have been lowered for Zn, Rb, Y and Zn approximately by the factor of 2. When interelement corrections are made, the XRF values are found to be in good agreement with the preferred chemical values for the 19 international silicate-rock standards.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 21: Twenty-Sixth Annual Conference on Applications of X-ray Analysis, August 3-5, 1977 , 1977 , pp. 75 - 88
Copyright
Copyright © International Centre for Diffraction Data 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Fabbi, B.P. and Moore, W.J., “Rapid X-ray Fluorescence Determination of Sulfur in Mineralized Rocks from the Bingham Mining District”, Utah: Appl, Spectroscopy 24, 426–428 (1970).Google Scholar
2. Fabbi, B.P., “A Die for Pelletizing Samples for X-ray Fluorescence Analysis,” in Geological Survey Research 1970, Chap. B: U.S. Geol. Survey Prof. Paper 700-B, B187-B189 (1970).Google Scholar
3. Fabbi, B.P., Elsheimer, H. N., and Espos, L.F., “Quantitative Analysis of Selected Minor and Trace Elements Through Use of a Computerized Automatic X-ray Spectrograph,” in Gould, R.W., Barrett, C.S., Newkirk, J.B. and Ruud, C. O., Editors, Advances in X-Ray Analysis, Vol. 19, 273–291, Plenum Press (1975).Google Scholar
4. Fabbi, B.P., “X-Ray Fluorescence Determination of Barium and Strontium in Geologic Samples,” Appl. Spectrosc., 25, 316–318 (1971).Google Scholar
5. Fleischer, M., “U.S. Geological Survey Standards-I. Additional Data on Rocks G-l and W-l 1965-67,” Geochim. et Cosmochim. Acta, 33, 65–79 (1969).Google Scholar
6. Flanagan, F.J., “U.S. Geological Survey Standards-II. First Compilation of Data for the New U.S.G.S. Rocks.” Geochim. et Cosmochim. Acta, 33 81–120 (1969).Google Scholar
7. Flanagan, F.J., “1972 Values for International Geochemical Reference Samples,” Geochim. et Cosmochim. Acta, 37, 11891200 (1973).Google Scholar
8. Sine, N.M., Taylor, W. O., Webber, G.R., and Lewis, C.L., “Third. Report of Analytical Data for CAAS Sulphide Ore and Syenite Rock Standards,” Geochim. et Cosmochim. Acta, 33, 121–131 (1969).Google Scholar
9. de la Roche, H. and Govindaraju, K., “Report (1972) on Four Geochemical Standards of the National Association of Technical Research: Diorite DR-N, Serpentine UB-N, Bauxite BX-N, and Disthene DT-N,” Bull. Soc. Fr. Cer., No. 100, 49–75 (1973).Google Scholar
10. Thomas, W. K. L. and Kempe, D. R. C., ‘'Standard Geochemical Sample T-l: Supplement 1,” Geological Survey, Tanganyika (1963).Google Scholar
11. Myers, A.T., Havens, R.G., and Niles, W.W., “Glass Reference Standards for Trace Element Analysis of Geologic Materials,” Developments in Appl. Spectrosc., 132-137 (1970).Google Scholar
12. Jenkins, R. H. , and DeVries, B. , “Worked examples in X-ray spectrometry”, New York, Springer Verlag, 129 p. (1970).Google Scholar
13. Elsheimer, H.N. and Fabbi, B.P., “A versatile X-ray Fluorescence Method for the Analysis of Sulfur in Geologic Materials,” in Grants, C.L. Barrett, C.S., Newkirk, J.B. and Ruud, C. O., Editors, Advances in X-ray Analysis, Vol. 17, 236–246, Plenum Press (1974).Google Scholar
14. Owen, L.B. and Faure, G., “Simultaneous Determination of Hafnium and Zirconium in Silicate Rocks by Isotope Dilution,” Anal. Chemistry, 46, 1323 (1974).Google Scholar
15. Abbey, S., “Studies in Standard Samples of Silicate Rocks and Minerals,” Canada Geol, Survey Paper 73–36 (1973).Google Scholar
16. Ingamells, C. O., Suhr, N.H., Tan, F.C., and Anderson, D.H., “Barium and Strontium in Silicates: A Study on the Development of Analytical Methods,” Anal. Chim. Acta, 53 345–360 (1971).Google Scholar