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A neutron activation analysis procedure for the determination of uranium, thorium and potassium in geologic samples

Journal of Radioanalytical Chemistry

By:
,
DOI: 10.1007/BF02518619

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Abstract

A neutron activation analysis procedure was developed for the determination of uranium, thorium and potassium in basic and ultrabasic rocks. The three elements are determined in the same 0.5-g sample following a 30-min irradiation in a thermal neutron flux of 2??1012 n??cm-2??sec-1. Following radiochemical separation, the nuclides239U (T=23.5 m),233Th (T=22.2 m) and42K (T=12.36 h) are measured by ??-counting. A computer program is used to resolve the decay curves which are complex owing to contamination and the growth of daughter activities. The method was used to determine uranium, throium and potassium in the U. S. Geological Survey standard rocks DTS-1, PCC-1 and BCR-1. For 0.5-g samples the limits of detection for uranium, throium and potassium are 0.7, 1.0 and 10 ppb, respectively. ?? 1972 Akade??miai Kiado??.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A neutron activation analysis procedure for the determination of uranium, thorium and potassium in geologic samples
Series title:
Journal of Radioanalytical Chemistry
DOI:
10.1007/BF02518619
Volume
11
Issue:
1
Year Published:
1972
Language:
English
Publisher:
Kluwer Academic Publishers
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
67
Last page:
84