Gamma spectrometry analysis of fertilizers used in Costa Rica

Abstract

Using the low level gamma spectrometry technique, the specific activity of natural and artificial isotopes present in national consumption fertilizers, supplied by local dealers, was quantified. The most outstanding isotope found in some of the fertilizers is ²³⁵U, with an specific activity higher than the expected in this kind of product, which might mean that this isotope comes from imported raw material.