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Características y selección del comparador para su uso en el análisis por activación neutrónica paramétrico
(Instituto Peruano de Energía Nuclear, 2011-10)
Se discuten las características, tanto nucleares como físicas, para la selección adecuada de los monitores a ser empleados como comparador analítico en el análisis por activación neutrónica paramétrico. Se evalúan las más ...
Determination of precious and rare metals in minerals concentrates and tailings, using k_0 based instrumental neutron activation analysis
(Lima, 2002-06)
Under the frame of CRP “Validation of nuclear techniques for analysis of precious and rare metals in mineral concentrates”, in order to improve the utilization of nuclear analytical techniques in terms of high accuracy and ...
A combined method of neutron activation analysis and radiometric measurements for U-234 and U-238 determination in soil samples of low uranium concentration
(Instituto Peruano de Energía Nuclear, 2011-10)
A method that combines the use of non-destructive neutron activation analysis and high-resolution spectrometry has been developed for determination of the activities of U-234 and U-238 in geological samples of low uranium ...
Quality assurance of analytical results in environmental samples by means of participation in intercomparison round
(Lima, 2003-07)
In developing countries, limited resources in the laboratories hinder quality assurance. One way to overcome this problem is to participate in international interlaboratory comparison rounds in order to asses the reliability ...
Factibilidad del análisis por activación neutrónica de cerámicos arqueológicos enteros: Parte 1: Precisión de resultados y seguridad radiológica del proceso
(Instituto Peruano de Energía Nuclear, 2010-04)
Se ha estudiado la factibilidad de utilizar el análisis por activación neutrónica instrumental en objetos cerámicos enteros, empleando flujos neutrónicos térmicos bajos. El estudio toma en cuenta los elementos químicos ...
The development of the k0 method in Peru: Past, present, and future perspectives
(Instituto Peruano de Energía Nuclear, 2010-11)
The k0 method was implemented at the Peruvian Institute of Nuclear Energy (IPEN), by 1993. Since the middle of 1994, almost all INAA work at IPEN is performed by the k0 method. The establishment, applications, development ...
K_0-based instrumental neutron activation analysis using MS-Excel and Canberra Genie-2000
(Instituto Peruano de Energía Nuclear, 2010-04)
We describe an application, developed in Microsoft Excel, for the complete processing of data and automated presentation of results, of k_0-based instrumental neutron activation analysis. The application makes extensive ...
Radiochemical separation of Cd-109 and Hg-203 by ion exchange chromatography
(Lima, 1990-07)
NAA of mercury and cadmium in food, at trace levels, usually needs suitable methods of radiochemical separation. This work explores two of such procedures. In the firs procedure and irradiated sample is heated with a mixture ...
Corrección de eficiencia por variación de geometría, empleando hojuelas de Zn como comparador en mediciones de INAA paramétrico
(Instituto Peruano de Energía Nuclear, 2010-11)
Se ha modificado la morfología del comparador de Zn, en forma de hojuela, a fin de asegurar la similitud geométrica con respecto a las muestras de matriz silícea analizadas rutinariamente por la técnica de INAA. Se ha ...