Analysis of Lateritic Material from Cerro Impacto by Instrumental Neutron Activation Employing a Low-Energy Photon Semiconductor and a High-Energy Ge(Li) Detector

Authors: Labrecque, J. J.1; Beusen, J. M.2; Van Grieken, R. E.2

Source: Applied Spectroscopy, Volume 40, Issue 2, Pages 133-283 (February 1986) , pp. 140-144(5)

Publisher: Society for Applied Spectroscopy

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Abstract:

Nineteen elements were determined in four different grain size fractions of a bulk geological material from Cerro Impacto for a study of the physical (mechanical) concentration process of different elements based upon the hardness of the different minerals. The analysis was performed by excitation of the sample with a high, slow neutron flux followed by gamma-ray spectroscopy with both a conventional Ge(Li) high-energy detector and a low-energy photon detector (LEPD). The accuracy of this method was studied with the use of two standard reference materials, SY-2 and SY-3, which are similar to the real samples. The values determined were also compared with a secondary target x-ray fluorescence method for all the elements that were suitable to both methods. Actually, the x-ray fluorescence method was found to be more complementary than competitive.

Keywords: Lateritic material; Neutron activation analysis; X-ray fluorescence

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702864509600

Affiliations: 1: Instituto Venezolano de Investigaciones Cientificas, Apartado 1827, Caracas, Venezuela 2: Department of Chemistry, University of Antherp, Wilrijk, B-2610 Belgium

Publication date: February 1, 1986

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