Rapid Instrumental Nuclear Activation Analysis of Rocks, Cements and Meteorites
✍ Scribed by A. Wyttenbach
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- German
- Weight
- 497 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
The experimental set-up and the method for y-spcctrxn analysis as used in the activation analysis of rocks, cements and meteorites by reactor ncutrons are discussed. Rapid nondestructive simultareous determination of several elements is poc,sihle. Fractional percent reproducibility is possible for Al, Tu'a and Mn; the deterniination of Ca, Mg and V in the samples studicd is influenced hy the Aland hln-content, but reproducibility approaches 17; in favorable cases. ,kccuracy is generally within the limits set by the reproduribility. The minimum weight of the sample is small (10-40 mg), but the grain-size must be 11~1,; .v 150 mesh; in the case of meteorites, a grain-size effect has been demonstrated. Represe2tative results for several standard rocks and cements, for 7 Ta-chondrites, 2 h>-perstene achorrtiritcs and separate mineral phases of the Elenovka chvndrite are givrn.