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Energy Dispersive Analysis of Actinides, Lanthanides, and Other Elements in Soil and Sediment Samples

Published online by Cambridge University Press:  06 March 2019

G. R. Laurer ,
J. Furfaro ,
M. Carlos ,
W. Lei ,
R. Ballad  and
T. J. Kneip
G. R. Laurer
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
J. Furfaro
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
M. Carlos
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
W. Lei
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
R. Ballad
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
T. J. Kneip
Affiliation:
Institute of Environmental Medicine New York University Medical Center New York, New York 10016
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Extract

A model is under development at this laboratory to predict the mobilization of Th from an estimated 20,000 metric ton deposit, in place and weathering as long as 80 million years on the Morro do Ferro, a hill on the Pacos de Caldas plateau in Minas Gerais, Brazil. The significance of this deposit lies in the marked similarities, chemically, between Th and Pu with reference to the problem of Pu waste management from the nuclear fuel cycle. One of the objectives of this program is to determine the elemental composition of the Morro do Ferro soil and its relationship to the mobilization of Th from the deposit. X-ray fluorescence is used for the analysis of Th, U, Ba, La, Ce, Pr, Nd, Sm, Dy, Eu, Gd, Yb, Hf , Fe, Zr, N b , Mo and Pb. This paper describes the XRF system and methodology used for the determinations and presents the results of 72 core, soil and sediment sample analyses for the above 18 elements. Analyses of three United States Geological Survey (USGS) rock standards are also presented.

Type
V. XRF Environmental Applications
Information
Advances in X-Ray Analysis , Volume 25: Thirtieth Annual Conference on Applications of X-ray Analysis, August 3-7, 1981 , 1981 , pp. 201 - 208
Copyright
Copyright © International Centre for Diffraction Data 1981

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References

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