Application of neutron activation analysis to determine the contents and isotopic ratios of elements in rocks and minerals
- 41 Downloads
Data on the applicability of neutron activation analysis to determine various rare and trace elements and the isotopic abundance of some of them in natural samples are discussed as relevant to the solution of various geological and geochemical problems. For the determination of minute amounts of elements from small weighed quantities of rocks and minerals a number of modifications of neutron activation analysis are used: analysis with the radiochemical separation of individual elements—RNAA (tantalum, tungsten, antimony, arsenic, molybdenum, rhenium, osmium, etc.) and analysis with semiconductor—Ge (Li)—gamma-spectrometry, which is multi-element and non-destructuve—INAA (scandium, europium, tantalum, iron caesium, rubidium, cobalt, antimony, etc.) or the combination of the latter with group radiochemical separation—IRNAA (alkaline, alkaline-earth, rare-earth elements, etc.). First steps have been made towards developing techniques for the determination of the isotopic rations of some elements by means of neutron activation method, e.g., the isotopic ratio of58Fe/54Fe. The accuracy of isotopic ratio determination is 1 to 3 relative per cent.
KeywordsNeutron Activation Neutron Activation Analysis Instrumental Neutron Activation Analysis Rhenium Scandium
Unable to display preview. Download preview PDF.
- 2.M. B. SHIRYAEVA, L. N. LYUBIMOVA, Yu. P. SALMIN, T. V. SERGEEVA, L. L. GRINBERG, Metody kolichestvennogo analiza mineral'nogo syr'ya, vyp. 13, Neutron activation methods of analysis of mineral raw materials, rotoprinted by VIMS, Moscow, 1971, p. 9. (in Russian).Google Scholar
- 3.D. I. LEIPUNSKAYA, V. I. DRYNKIN, B. V. BELEN'KIY, M. A. KOLOMITZEV, V. I. DUNDUA, N. V. PACHULIYA, Synthetic multi-element standard specimens for instrumental neutron activation analysis stimulating the micro-element composition of rocks, preprint 21-INF, Tbilisi, 1974. (In Russian).Google Scholar