Abstract
A number of problems associated with the geochemical application of instrumental neutron activation analysis are discussed. Particular emphasis is placed on the problems of preparing and using multi-element standard solutions and/or those associated with the accurate computer reduction of γ-spectral data. It is concluded that accurately and extensively analysed rocks and minerals best fulfil the requirements for multi-element standards in this type of analysis. In the second part of the paper instrumental neutron activation analysis data are presented for 26 international reference samples including 4 of the less well-analysed U.S.G.S. standard rocks. Some limited geochemical interpretations of the data are presented.
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