ROUTINE DETERMINATION OF MANGANESE IN ORES BY INAA WITH AN AM-BE NEUTRON SOURCE - APPLICATION TO MANGANESE ORE-DEPOSITS IN NORTH-WESTERN NIGERIA

Authors
ONOJAH A UMAR IM FUNTUA II ELEGBA SB DAS HA
Citation
A. Onojah et al., ROUTINE DETERMINATION OF MANGANESE IN ORES BY INAA WITH AN AM-BE NEUTRON SOURCE - APPLICATION TO MANGANESE ORE-DEPOSITS IN NORTH-WESTERN NIGERIA, Journal of radioanalytical and nuclear chemistry, 201(1), 1995, pp. 25-30
Citations number
3
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
201
Issue
1
Year of publication
1995
Pages
25 - 30
Database
ISI
SICI code
0236-5731(1995)201:1<25:RDOMIO>2.0.ZU;2-E
Abstract
A 5 Ci Am-Be isotopic neutron source was used for the routine determin ation of manganase in ore samples. Concentration range was 0.1-35%, sa mple mass is about 17 g, irradiation time 6 h and cooling time 2 min, Counting was performed with a flat 3 '' x 3 '' NaI crystal for 1 h. Fo r low concentrations, several aliquots are irradiated in identical pos itions around the source and combined. Standards of similar compositio n to that of the samples are made of KMnO4 mixed with Fe2O3 and SiO2. Corrections are applied for residual differences in neutron and gamma- absorption.