Avances en la validación de la técnica de conteo de neutrones retardados en Colombia para la determinación de uranio y torio en muestras geológicas
- Velásquez, Ana Milena 1
- Acero, Fabio Nelson
- Porras, Andrés
- Vela, Giovanni
- Mosos, Fernando 1
- Muñoz, Jimmy
- Guzmán, Martha Yaneth
- Sierra, Oscar
- Peña, Mary Luz 1
- Carvajal, Ana María
- 1 Dirección de Asuntos Nucleares, Servicio Geológico Colombiano, Bogotá, Colombia.
ISSN: 2711-1326, 2590-7468
Datum der Publikation: 2022
Nummer: 6
Seiten: 5-20
Art: Artikel
Andere Publikationen in: Revista investigaciones y aplicaciones nucleares
Zusammenfassung
The Delayed Neutron Counting (DNC) technique is a fast, sensitive analytical method, employs small sample amounts, is non-destructive and independent of matrix effects used for the determination of physical elements such as uranium and thorium. This paper describes the advances in the validation process of the DNC technique for the analysis of uranium and thorium in samples of geological origin. It is found that the criteria established by the laboratory to qualify the technique satisfy the set analytical goals, guaranteeing the determination of the uranium mass fraction in a traceable and reliable way. On the other hand, for thorium, the development of other studies and analyzes is necessary to guarantee the reliability in the determination of the mass fraction with this methodology. The results obtained allow us to conclude that the validation process of the technique leads to the reliable determination of uranium and thorium, contributing to the increase of the analytical capacities of the geological resources in the country.