NEUTRON-ACTIVATION DETERMINATION OF NOBLE-METALS IN SAMPLES OF TERRESTRIAL AND COSMIC ORIGIN USING MICROFIRE ASSAY CONCENTRATION

Authors
KOLESOV GM SAPOZHNIKOV DY
Citation
Gm. Kolesov et Dy. Sapozhnikov, NEUTRON-ACTIVATION DETERMINATION OF NOBLE-METALS IN SAMPLES OF TERRESTRIAL AND COSMIC ORIGIN USING MICROFIRE ASSAY CONCENTRATION, Analyst, 120(5), 1995, pp. 1461-1464
Citations number
21
Categorie Soggetti
Chemistry Analytical
Journal title
Analyst → ACNP
ISSN journal
00032654
Volume
120
Issue
5
Year of publication
1995
Pages
1461 - 1464
Database
ISI
SICI code
0003-2654(1995)120:5<1461:NDONIS>2.0.ZU;2-#
Abstract
The effects of various factors (composition of mixture, relationship b etween the mass of mixture and sample, value of the Ni:S ratio, fusion time, and temperature) on the conditions of the fire assay concentrat ion of the noble metals with nickel sulfide were investigated, and a m ethod proposed for their quantitative separation from different geolog ical matrices with a neutron activation determination for up to 10(-1) -10(-3) ppb. The proposed method is used to analyse geological samples , i.e., ores, stones, iron meteorites, chromites, soil and lunar rocks .