Radiocarbon Intercomparison Studies at the Rudjer Bošković Institute

Abstract

The Radiocarbon Tritium Laboratory at the Rudjer Bošković Institute participated in all three radiocarbon intercomparison studies. The first International Collaborative Study (ICS) showed that the age of organic samples measured at our laboratory is ca. 70 yr younger than the median ICS value. After introducing a slight modification in our chemical pre-treatment procedure by acidifying samples after alkaline treatment, we obtained excellent agreement between our results and the median values reported by two subsequent intercomparisons (IAEA, TIRI) without any laboratory bias.