Quality control in routine instrumental epithermal neutron activation analysis of geological samples

Maija Lipponen, Rolf Rosenberg

Research output: Contribution to journalArticleScientificpeer-review


The Reactor Laboratory in Espoo, Finland carries out analytical service by using neutron activation analysis. However, a major part of the analytical service is instrumental epithermal neutron activation analysis (IENAA) of geological samples. The quality control aspect of this procedure discussed. The main purpose for developing the technique was the need for a low cost and low detection limit determination of gold for geochemical exploration. The procedure used determines the concentration of 23 elements. Procedures for the simultaneous epithermal neutron irradiation of 600 samples and automatic measurement and data processing have been developed. A strong emphasis has been put on the reliability of the results. Because most of the samples are analyzed for geochemical exploration, the acquired accuracy of ±10-20% is sufficient.
Original languageEnglish
Pages (from-to)224-228
JournalJournal of Research of the National Bureau of Standards
Issue number3
Publication statusPublished - 1988
MoE publication typeA1 Journal article-refereed


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