Premium
Determination of Niobium in 15 USGS Standard Rocks by NEutron Activation Analysis
Author(s) -
ALLEN R.O.,
STEINNES E.
Publication year - 1979
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1979.tb00240.x
Subject(s) - niobium , neutron activation analysis , radiochemistry , matrix (chemical analysis) , analytical chemistry (journal) , neutron activation , neutron , materials science , sensitivity (control systems) , tracer , mineralogy , chemistry , nuclear physics , physics , metallurgy , chromatography , composite material , electronic engineering , engineering
The niobium concentrations in 15 U.S.G.S. standard rocks were measured by neutron activation analysis. The niobium was separated from the rock matrix (in the presence of 95 Nb tracer, which was used to measure the fraction recovered) before irradiation to improve the sensitivity. Results of this work are compared with those obtained by other techniques. Some results obtained by multielement X‐ray fluorescence procedures agree well with the present data, but a systematic disagreement exists between these and the spectrophotometric data.